strongly basic media: Topics by Science.gov

Sample records for strongly basic media

Diazotisation of Weakly Basic Aromatic and Heterocyclic Amines in Strongly Acid Media

NASA Astrophysics Data System (ADS)

Godovikova, Tamara I.; Rakitin, Oleg A.; Khmel'nitskii, Lenor I.

1983-05-01

The review is devoted to the diazotisation of weakly basic aromatic amines. The methods of synthesis of diazonium salts based on these amines by non-traditional methods are examined. Data on the mechanism of the diazotisation reaction in strongly acid media are surveyed. Reactions of diazonium salts leading to the synthesis of new compounds are presented. The bibliography includes 75 references.
Media and Sexism (An Instructional Manual for Secondary School Teachers).

ERIC Educational Resources Information Center

Byerly, Carolyn M.

This manual presents background information and teaching activities for secondary school instruction on the relationship of sex roles and the media in American society. Section I provides background for teachers by defining basic terms, presenting a brief history of the mass media, and discussing why media are thought to play a strong role in…
Teaching Media and Culture of the Middle East to American Students

ERIC Educational Resources Information Center

Muhtaseb, Ahlam; Algan, Ece; Bennett, Anne

2014-01-01

Americans know very little about the Middle East in general despite the fact that the region is at the heart of American foreign policy. While no one doubts the importance of teaching the history, culture, and politics of the Middle East in the United States, lack of basic knowledge coupled with the strong antipathy toward Arabs and Muslims make…
Protonation switching to the least-basic heteroatom of carbamate through cationic hydrogen bonding promotes the formation of isocyanate cations.

PubMed

Kurouchi, Hiroaki; Sumita, Akinari; Otani, Yuko; Ohwada, Tomohiko

2014-07-07

We found that phenethylcarbamates that bear ortho-salicylate as an ether group (carbamoyl salicylates) dramatically accelerate OC bond dissociation in strong acid to facilitate generation of isocyanate cation (N-protonated isocyanates), which undergo subsequent intramolecular aromatic electrophilic cyclization to give dihydroisoquinolones. To generate isocyanate cations from carbamates in acidic media as electrophiles for aromatic substitution, protonation at the ether oxygen, the least basic heteroatom, is essential to promote CO bond cleavage. However, the carbonyl oxygen of carbamates, the most basic site, is protonated exclusively in strong acids. We found that the protonation site can be shifted to an alternative basic atom by linking methyl salicylate to the ether oxygen of carbamate. The methyl ester oxygen ortho to the phenolic (ether) oxygen of salicylate is as basic as the carbamate carbonyl oxygen, and we found that monoprotonation at the methyl ester oxygen in strong acid resulted in the formation of an intramolecular cationic hydrogen bond (>CO(+) H⋅⋅⋅O<) with the phenolic ether oxygen. This facilitates OC bond dissociation of phenethylcarbamates, thereby promoting isocyanate cation formation. In contrast, superacid-mediated diprotonation at the methyl ester oxygen of the salicylate and the carbonyl oxygen of the carbamate afforded a rather stable dication, which did not readily undergo CO bond dissociation. This is an unprecedented and unknown case in which the monocation has greater reactivity than the dication. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Needs Satisfied by Media Use: An Audience Typology.

ERIC Educational Resources Information Center

Kochevar, John J.

A study was conducted to segment the mass media audience on the basis of basic needs and media satisfactions. Two hundred undergraduate journalism students completed lengthy questionnaires rating their media use before and during the New York newspaper strike of 1978, along with their basic needs, media satisfactions, and a variety of other…
Effective Engagement of Hostile Audiences on Climate Change

NASA Astrophysics Data System (ADS)

Denning, A.

2011-12-01

In 2010 and 2011, I gave invited presentations of mainstream climate science to large conferences dismissive of climate change organized by the HEartland Institute. In this presentation I review some of the common objections raised by such audiences and outline effective strategies to rebut them in public venues or the media. Respectful engagement on a human level is much more effective than appeals from authority, scientific consensus, or numerical models. Starting from a base of agreement on basic facts helps establish a basis of trust, which is then nurtured through personal anecdotes and humor. The basic science of climate change is presented in a non-confrontational way with frequent use of examples from everyday life to explain physical principles. Although a hard core of hostile individuals may not be swayed by such an approach, my experience was that this type of engagement can be very effective with ordinary people. I strongly encourage more climate scientists to work with public audiences and the media.
Virtual laboratory learning media development to improve science literacy skills of mechanical engineering students on basic physics concept of material measurement

NASA Astrophysics Data System (ADS)

Jannati, E. D.; Setiawan, A.; Siahaan, P.; Rochman, C.

2018-05-01

This study aims to determine the description of virtual laboratory learning media development to improve science literacy skills of Mechanical Engineering students on the concept of basic Physics. Quasi experimental method was employed in this research. The participants of this research were first semester students of mechanical engineering in Majalengka University. The research instrument was readability test of instructional media. The results of virtual laboratory learning media readability test show that the average score is 78.5%. It indicates that virtual laboratory learning media development are feasible to be used in improving science literacy skill of Mechanical Engineering students in Majalengka University, specifically on basic Physics concepts of material measurement.
45 CFR 17.2 - Basic policy.

Code of Federal Regulations, 2013 CFR

2013-10-01

... 45 Public Welfare 1 2013-10-01 2013-10-01 false Basic policy. 17.2 Section 17.2 Public Welfare DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL ADMINISTRATION RELEASE OF ADVERSE INFORMATION TO NEWS MEDIA § 17.2 Basic policy. All adverse information release to news media shall be factual in content and...
45 CFR 17.2 - Basic policy.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 45 Public Welfare 1 2010-10-01 2010-10-01 false Basic policy. 17.2 Section 17.2 Public Welfare DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL ADMINISTRATION RELEASE OF ADVERSE INFORMATION TO NEWS MEDIA § 17.2 Basic policy. All adverse information release to news media shall be factual in content and...
45 CFR 17.2 - Basic policy.

Code of Federal Regulations, 2012 CFR

2012-10-01

... 45 Public Welfare 1 2012-10-01 2012-10-01 false Basic policy. 17.2 Section 17.2 Public Welfare DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL ADMINISTRATION RELEASE OF ADVERSE INFORMATION TO NEWS MEDIA § 17.2 Basic policy. All adverse information release to news media shall be factual in content and...
45 CFR 17.2 - Basic policy.

Code of Federal Regulations, 2014 CFR

2014-10-01

... 45 Public Welfare 1 2014-10-01 2014-10-01 false Basic policy. 17.2 Section 17.2 Public Welfare Department of Health and Human Services GENERAL ADMINISTRATION RELEASE OF ADVERSE INFORMATION TO NEWS MEDIA § 17.2 Basic policy. All adverse information release to news media shall be factual in content and...
45 CFR 17.2 - Basic policy.

Code of Federal Regulations, 2011 CFR

2011-10-01

... 45 Public Welfare 1 2011-10-01 2011-10-01 false Basic policy. 17.2 Section 17.2 Public Welfare DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL ADMINISTRATION RELEASE OF ADVERSE INFORMATION TO NEWS MEDIA § 17.2 Basic policy. All adverse information release to news media shall be factual in content and...
Disintegration-controllable stimuli-responsive polyelectrolyte multilayer microcapsules via covalent layer-by-layer assembly.

PubMed

Mu, Bin; Lu, Chunyin; Liu, Peng

2011-02-01

The disintegration-controllable stimuli-responsive polyelectrolyte multilayer microcapsules have been fabricated via the covalent layer-by-layer assembly between the amino groups of chitosan (CS) and the aldehyde groups of the oxidized sodium alginate (OSA) onto the sacrificial templates (polystyrene sulfonate, PSS) which was removed by dialysis subsequently. The covalent crosslinking bonds of the multilayer microcapsules were confirmed by FTIR analysis. The TEM analysis showed that the diameter of the multilayer microcapsules was <200nm. The diameter of the multilayer microcapsules decreased with the increasing of the pH values or the ionic strength. The pH and ionic strength dual-responsive multilayer microcapsules were stable in acidic and neutral media while they could disintegrate only at strong basic media. Copyright © 2010 Elsevier B.V. All rights reserved.
Chemical durability of alkali-borosilicate glasses studied by analytical SEM, IBA, isotopic-tracing and SIMS

NASA Astrophysics Data System (ADS)

Trocellier, P.; Djanarthany, S.; Chêne, J.; Haddi, A.; Brass, A. M.; Poissonnet, S.; Farges, F.

2005-10-01

Simple and complex alkali-borosilicate glasses were submitted to aqueous corrosion at room temperature, 60 and 90 °C in solutions with pH ranging between 0 and 12. Analytical scanning electron microscopy (SEM), ion beam analysis (IBA) techniques, isotopic tracing and secondary ion mass-depth profiling (SIMS) have been used to investigate the variations of the surface composition of glass. In acidic medium, the glass surface is generally covered by a thick hydrated silica layer, mobile elements like Li, Na and B and transition elements (Fe, Zr, Mo, etc.) are strongly depleted. Near pH 7, relative enrichments of aluminium, iron and rare earths are shown together with strong Li, Na and B depletions. In basic medium, the glass surface exhibits relative enrichments of the major part of transition metals (from Cr to U) whereas mobile elements seem to be kept close to their nominal concentration level at the glass surface and Si is severely impoverished. Hydrogen incorporated at the glass surface after leaching is much more immobile in neutral and basic media than in acid medium.
Interactive learning media based on flash for basic electronic engineering development for SMK Negeri 1 Driyorejo - Gresik

NASA Astrophysics Data System (ADS)

Mandigo Anggana Raras, Gustav

2018-04-01

This research aims to produce a product in the form of flash based interactive learning media on a basic electronic engineering subject that reliable to be used and to know students’ responses about the media. The target of this research is X-TEI 1 class at SMK Negeri 1 Driyorejo – Gresik. The method used in this study is R&D that has been limited into seven stages only (1) potential and problems, (2) data collection, (3) product design, (4) product validation, (5) product revision, (6) field test, and (7) analysis and writing. The obtained result is interactive learning media named MELDASH. Validation process used to produce a valid interactive learning media. The result of media validation state that the interactive learning media has a 90.83% rating. Students’ responses to this interactive learning media is really good with 88.89% rating.
The Basic Course in Communication, Media Literacy, and the College Curriculum

ERIC Educational Resources Information Center

Ramsey, Evelyn M.

2017-01-01

Various authors make suggestions about the inclusion of public address, civility critical communication pedagogy and social justice into the basic course in communication studies. Media literacy pedagogy encourages students to actively and critically consider the messages they send and receive, critically assess all forms of communication, be…
Basic Media in Education.

ERIC Educational Resources Information Center

Harrell, John

Intended as a guide to the use of different media for use in the classroom, this document demonstrates alternative approaches that may be taken to depicting and communicating images and concepts to others. Some basic tools and materials--including a ruler, matte knife, rubber cement, stapler, felt-tip pens, paint brushes, and lettering pens--are…
Properties of amphoteric polyurethane waterborne dispersions. II. Macromolecular self-assembly behavior.

PubMed

Dong, Anjie; Hou, Guoling; Sun, Duoxian

2003-10-15

Amphoteric polyurethane (APU) samples used in this paper were composed of hydrophobic soft segments and pendent -COOH and -CH(2)N(CH(3))(2) groups on the hard segments, which present the properties of both amphoteric polyelectrolytes and amphiphilic block copolymers. APU macromolecules can self-assemble into micelles in acidic and basic aqueous media by hydrophobic/hydrophilic interaction. The self-assembly behavior of APU in acidic and basic media was studied by transmission electron microscopy and light scattering methods. The spherical and hollow micelles of APU were observed respectively in acidic and basic aqueous media. The results indicate that the size and size distribution of APU self-assembly micelles largely depend on the ratio of -COOH to -CH(2)N(CH(3))(2) groups, density of ionizable groups, concentration of APU, and types of acid and base in the media.
Guiding Young Children's Digital Media Use: SES-Differences in Mediation Concerns and Competence.

PubMed

Nikken, Peter; Opree, Suzanna J

2018-01-01

Previous research about parents' mediation of their young children's (digital) media use has predominantly focused on the different types, determinants, and effectiveness of parental mediation strategies. Although research on parents' perceived mediation concerns and competences is scarce, it is known that, compared to mothers and high-educated parents, fathers and low-educated parents experience greater insecurity (i.e., higher concern and lower competence) when applying media mediation. Based on Bourdieu's theory of social capital it may be expected that-in addition to educational level-marital status and family income predict parents' perceived mediation concerns and competences: Family demographics may predict parents' media proficiency and adoption of new media technologies and these media ecological factors may, in turn, affect perceived concerns and competences. To test this assumption, survey data were collected among 1029 parents of children between the ages of 1 to 9 years. We found that parents' basic media proficiency was lower in low income, low educated, and single-parent families, whereas parents' advanced media proficiency was only lower in low educated and single-parent families. As expected, parents' ease of active co-use was positively associated with parents' basic proficiency, ease of restrictive mediation by basic and advanced proficiency, and ease of imposing technical restrictions by advanced media proficiency. Parents' perceived mediation concerns were, however, unrelated to parents' media proficiency. Also, as expected, low educated parents were less inclined to adopt new media technologies. Adoption of new media was negatively related to perceived mediation concerns, yet did not predict parents' perceived competence.
Supplementation of an Artificial Medium for the Parasitoid Exorista larvarum (Diptera: Tachnidae) With Hemolymph of Hermetia illucens (Diptera: Stratiomyidae) or Antheraea pernyi (Lepidoptera: Saturniidae).

PubMed

Dindo, Maria Luisa; Vandicke, Jonas; Marchetti, Elisa; Spranghers, Thomas; Bonte, Jochem; De Clercq, Patrick

2016-04-01

The effect of supplementing hemolymph of the black soldier fly, Hermetia illucens (L.), or the Chinese oak silkworm, Antheraea pernyi (Guérin-Méneville), to a basic insect-free artificial medium for the tachinid Exorista larvarum (L.) was investigated. The supplementation (20% w/w) was based on the assumption that insect additives may optimize the media for this parasitoid. Egg hatch, pupal and adult yields, and sex ratio did not differ among the enriched and basic media. Preimaginal development was faster on both hemolymph-enriched media than on the basic medium. Despite the shorter development on the medium supplemented with H. illucens hemolymph than on the basic medium, on the two media puparium weights were comparable. The female flies reared on the medium enriched with H. illucens hemolymph did not lay more eggs, but the latter yielded significantly more puparia compared with the control females. Conversely, the medium enriched with A. pernyi hemolymph yielded lower female puparium weights than the basic medium and produced only one ovipositing female out of the five obtained female adults. These results indicate that the in vitro development of E. larvarum improved when the basic artificial medium was enriched with H. illucens hemolymph, whereas the supplementation with A. pernyi hemolymph negatively affected the quality of the in vitro-reared females.

Working with the Media. Basic School PR Guide.

ERIC Educational Resources Information Center

Tilden, Scott W.

To help improve school public relations programs, this handbook covers communications with print and broadcast media. An overview briefly discusses education's relationship to the media. Chapter 1, on preparations for working with the media, advises making personal contact with media persons and suggests how to prepare, what information to get,…
Can You Hear Me Now? Marketing Essentials for Audiologists in a Noisy Health Care World

PubMed Central

Rudden, DAnne

2016-01-01

Audiologists, even those with a strong acumen for business, are not traditionally taught the basics of creating a robust practice identity and dynamic marketing plan. This activity will teach learners how to create a distinct brand that separates them from others in a competitive and distracted marketplace. Additionally, learners will gain an understanding for how to blend traditional marketing tools with more modern online options and social media. Upon completion, learners will be familiar with the skills necessary to actively create, implement, and track the effectiveness of their marketing strategy using proven methodologies. PMID:28028325
Can You Hear Me Now? Marketing Essentials for Audiologists in a Noisy Health Care World.

PubMed

Rudden, DAnne

2016-11-01

Audiologists, even those with a strong acumen for business, are not traditionally taught the basics of creating a robust practice identity and dynamic marketing plan. This activity will teach learners how to create a distinct brand that separates them from others in a competitive and distracted marketplace. Additionally, learners will gain an understanding for how to blend traditional marketing tools with more modern online options and social media. Upon completion, learners will be familiar with the skills necessary to actively create, implement, and track the effectiveness of their marketing strategy using proven methodologies.
Practical Development of Modern Mass Media Education in Poland

ERIC Educational Resources Information Center

Fedorov, Alexander

2012-01-01

Practical development of modern mass media education in Poland. The paper analyzes the main ways of practical development of modern media education (1992-2012 years) in Poland: basic technologies, main events, etc.
Teaching Critical Literacy across the Curriculum in Multimedia America.

ERIC Educational Resources Information Center

Semali, Ladislaus M.

The teaching of media texts as a form of textual construction is embedded in the assumption that audiences bring individual preexisting dispositions even though the media may contribute to their shaping of basic attitudes, beliefs, values, and behavior. As summed up by D. Lusted, at the core of such textual construction are basic assumptions that…
Electrodeposited Co-doped NiSe2 nanoparticles film: a good electrocatalyst for efficient water splitting

NASA Astrophysics Data System (ADS)

Liu, Tingting; Asiri, Abdullah M.; Sun, Xuping

2016-02-01

In this communication, we report that a Co-doped NiSe2 nanoparticles film electrodeposited on a conductive Ti plate (Co0.13Ni0.87Se2/Ti) behaves as a robust electrocatalyst for both HER and OER in strongly basic media, with good activity over a NiSe2/Ti counterpart. This Co0.13Ni0.87Se2/Ti catalytic electrode delivers 10 mA cm-2 at an overpotential of 64 mV for HER and 100 mA cm-2 at an overpotential of 320 mV for OER in 1.0 M KOH. A voltage of only 1.62 V is required to drive 10 mA cm-2 for the two-electrode alkaline water electrolyzer using Co0.13Ni0.87Se2/Ti as an anode and cathode.In this communication, we report that a Co-doped NiSe2 nanoparticles film electrodeposited on a conductive Ti plate (Co0.13Ni0.87Se2/Ti) behaves as a robust electrocatalyst for both HER and OER in strongly basic media, with good activity over a NiSe2/Ti counterpart. This Co0.13Ni0.87Se2/Ti catalytic electrode delivers 10 mA cm-2 at an overpotential of 64 mV for HER and 100 mA cm-2 at an overpotential of 320 mV for OER in 1.0 M KOH. A voltage of only 1.62 V is required to drive 10 mA cm-2 for the two-electrode alkaline water electrolyzer using Co0.13Ni0.87Se2/Ti as an anode and cathode. Electronic supplementary information (ESI) available: Experimental section and supplementary figures. See DOI: 10.1039/c5nr07170d
Account of an optical beam spreading caused by turbulence for the problem of partially coherent wavefield propagation through inhomogeneous absorbing media

NASA Astrophysics Data System (ADS)

Dudorov, Vadim V.; Kolosov, Valerii V.

2003-04-01

The propagation problem for partially coherent wave fields in inhomogeneous media is considered in this work. The influence of refraction, inhomogeneity of gain medium properties and refraction parameter fluctuations on target characteristics of radiation are taken into consideration. Such problems arise in the study of laser propagation on atmosphere paths, under investigation of directional radiation pattern forming for lasers which gain media is characterized by strong fluctuation of dielectric constant and for lasers which resonator have an atmosphere area. The ray-tracing technique allows us to make effective algorithms for modeling of a partially coherent wave field propagation through inhomogeneous random media is presented for case when the influecne of an optical wave refraction, the influence of the inhomogeiety of radiaitn amplification or absorption, and also the influence of fluctuations of a refraction parameter on target radiation parameters are basic. Novelty of the technique consists in the account of the additional refraction caused by inhomogeneity of gain, and also in the method of an account of turbulent distortions of a beam with any initial coherence allowing to execute construction of effective numerical algorithms. The technique based on the solution of the equation for coherence function of the second order.
Aspen Handbook on the Media, 1975-76 Edition. Research, Publications, Organizations, Foundation Support, Government Review, International Communication Agencies.

ERIC Educational Resources Information Center

Rivers, William L., Ed.; Slater, William T., Ed.

The second edition of this guide to media organization and media research doubles previous listings and includes new sections on international organizations, law school programs dealing with the media, and an expanded section on government activities. Basic listings include universities and other institutions conducting major media research,…
Problematic Smartphone Use, Deep and Surface Approaches to Learning, and Social Media Use in Lectures.

PubMed

Rozgonjuk, Dmitri; Saal, Kristiina; Täht, Karin

2018-01-08

Several studies have shown that problematic smartphone use (PSU) is related to detrimental outcomes, such as worse psychological well-being, higher cognitive distraction, and poorer academic outcomes. In addition, many studies have shown that PSU is strongly related to social media use. Despite this, the relationships between PSU, as well as the frequency of social media use in lectures, and different approaches to learning have not been previously studied. In our study, we hypothesized that both PSU and the frequency of social media use in lectures are negatively correlated with a deep approach to learning (defined as learning for understanding) and positively correlated with a surface approach to learning (defined as superficial learning). The study participants were 415 Estonian university students aged 19-46 years (78.8% females; age M = 23.37, SD = 4.19); the effective sample comprised 405 participants aged 19-46 years (79.0% females; age M = 23.33, SD = 4.21). In addition to basic socio-demographics, participants were asked about the frequency of their social media use in lectures, and they filled out the Estonian Smartphone Addiction Proneness Scale and the Estonian Revised Study Process Questionnaire. Bivariate correlation analysis showed that PSU and the frequency of social media use in lectures were negatively correlated with a deep approach to learning and positively correlated with a surface approach to learning. Mediation analysis showed that social media use in lectures completely mediates the relationship between PSU and approaches to learning. These results indicate that the frequency of social media use in lectures might explain the relationships between poorer academic outcomes and PSU.
Problematic Smartphone Use, Deep and Surface Approaches to Learning, and Social Media Use in Lectures †

PubMed Central

Rozgonjuk, Dmitri; Saal, Kristiina

2018-01-01

Several studies have shown that problematic smartphone use (PSU) is related to detrimental outcomes, such as worse psychological well-being, higher cognitive distraction, and poorer academic outcomes. In addition, many studies have shown that PSU is strongly related to social media use. Despite this, the relationships between PSU, as well as the frequency of social media use in lectures, and different approaches to learning have not been previously studied. In our study, we hypothesized that both PSU and the frequency of social media use in lectures are negatively correlated with a deep approach to learning (defined as learning for understanding) and positively correlated with a surface approach to learning (defined as superficial learning). The study participants were 415 Estonian university students aged 19–46 years (78.8% females; age M = 23.37, SD = 4.19); the effective sample comprised 405 participants aged 19–46 years (79.0% females; age M = 23.33, SD = 4.21). In addition to basic socio-demographics, participants were asked about the frequency of their social media use in lectures, and they filled out the Estonian Smartphone Addiction Proneness Scale and the Estonian Revised Study Process Questionnaire. Bivariate correlation analysis showed that PSU and the frequency of social media use in lectures were negatively correlated with a deep approach to learning and positively correlated with a surface approach to learning. Mediation analysis showed that social media use in lectures completely mediates the relationship between PSU and approaches to learning. These results indicate that the frequency of social media use in lectures might explain the relationships between poorer academic outcomes and PSU. PMID:29316697
Media Center: Operations Handbook.

ERIC Educational Resources Information Center

Dependents Schools (DOD), Washington, DC.

This guide to basic technical procedures recommended in the operation of within-school media centers is intended for all Department of Defense Dependent Schools (DoDDS) media specialists, clerks, aides, and technicians. The first four sections refer to the general media program functions identified in the related manual, "A is for Apple:…
Determining Advanced and Basic Financial Literacy Relations and Overconfidence, and Informative Social Media Association of University Students in Turkey

ERIC Educational Resources Information Center

Karaa, Ibrahim E.; Kugu, Tayfun D.

2016-01-01

The purposes of the paper are, first, to investigate financial literacy in university students and to determine the relationship between basic and advanced financial literacy; second, to present a positive association between social media usage and financial literacy; third, to examine demographic factors consistent with previous studies; and,…
Dispersion, controlled dispersion, and three applications

NASA Astrophysics Data System (ADS)

Bradshaw, Douglas H.

Causality dictates that all physical media must be dispersive. (We will call a medium dispersive if its refractive index varies with frequency.) Ordinarily, strong dispersion is accompanied either by strong absorption or strong gain. However, over the past 15 years several groups have demonstrated that it is possible to have media that are both strongly dispersive and roughly transparent for some finite bandwidth. In these media, group and phase velocities may differ from each other by many orders of magnitude and even by sign. Relationships and intuitive models that are satisfactory when it is reasonable to neglect dispersion may then fail dramatically. In this dissertation we analyze three such cases of failure. Before looking at the specific cases, we review some basic ideas relating to dispersion. We review some of the geometric meanings of group velocity, touch on the relationship between group velocity and causality, and give some examples of techniques by which the group velocity may be manipulated. We describe the interplay between group velocity and energy density for non-absorbing dispersive media. We discuss the ideas of temporary absorption and emission as dictated by an instantaneous spectrum. We then apply these concepts in three specific areas. First, non-dispersive formulations for the momentum of light in a medium must be adjusted to account for dispersion. For over 100 years, there has been a gradual discussion of the proper form for the per-photon momentum. Two forms, each of which has experimental relevance in a 'dispersionless' medium, are the Abraham momentum, and the Minkowski momentum. If h is the angular frequency, n is the refractive index, h is Planck's constant, and c is the speed of light, then these reduce in a dispersionless medium to per-photon momenta of ho/(nc), and nho/c respectively. A simple generalization of the two momenta to dispersive media entails multiplying each per-photon momentum by n/ng, where ng is the group refractive index. The resulting forms are experimentally relevant for the case of the Abraham momentum, but not for the Minkowski momentum. We show how dispersion modulates the displacement of a sphere embedded in a dispersive medium by a pulse. Second, pulse transformation in a nonstationary medium is modulated by the presence of dispersion. Dispersion may enhance or mitigate the frequency response of a pulse to a changing refractive index, and if dispersion changes with time, the pulse bandwidth must change in a compensatory fashion. We introduce an explicit description of the kinetics of dispersive nonstationary inhomogeneous media. Using this description, we show how the group velocity can modulate the frequency response to a change in the refractive index and how Doppler shifts may become large in a dispersive medium as the velocity of the Doppler shifting surface approaches the group velocity. We explain a simple way to use existing technology to either compress or decompress a given pulse, changing its bandwidth and spatial extent by several orders of magnitude while otherwise preserving its envelope shape. We then introduce a dynamic descriptions of two simple media--one dispersive and one nondispersive. We compare the transformation of basic quantities like photon number, momentum density, and frequency by a temporal change in the refractive index in a specific non-dispersive medium to those wrought by a temporal change in the group refractive index in a specific dispersive medium. The differences between to media are fundamental and emphasize the salience of dispersion in the study of nonstationary media. Finally, we note that the nature of a single optical cavity quasimode depends on intracavity dispersion. We show that the quantum field noise associated with a single cavity mode may be modulated by dispersion. For a well-chosen mode in a high-Q cavity, this can amount to either an increase or a decrease in total vacuum field energy by several orders of magnitude. We focus on the "white light cavity," showing that the quantum noise of an ideal white light cavity diverges as the cavity finesse improves.
Images of Conflict: Learning from Media Coverage of the Persian Gulf War. A Media Literacy Workshop Kit.

ERIC Educational Resources Information Center

Osborn, Barbara; Davis, J. Francis

This workshop kit consists of: (1) 30-page "Leaders Guide and Handout Masters"; (2) 12-minute videotape, "Lines in the Sand"; (3) special 24-page issue of the journal "Media & Values" on the theme "The Media: in War and Peace"; and (4) an 8-page booklet on the basics of media literacy, "From…
Data Mining in Social Media

NASA Astrophysics Data System (ADS)

Barbier, Geoffrey; Liu, Huan

The rise of online social media is providing a wealth of social network data. Data mining techniques provide researchers and practitioners the tools needed to analyze large, complex, and frequently changing social media data. This chapter introduces the basics of data mining, reviews social media, discusses how to mine social media data, and highlights some illustrative examples with an emphasis on social networking sites and blogs.
Uses and Gratifications: A Classic Methodology Revisited.

ERIC Educational Resources Information Center

Bracken, Cheryl; Lombard, Matthew

2001-01-01

Examines uses and gratifications of college-age respondents regarding media use. Finds that (1) respondents rely on the media to fulfill basic human needs but that the media are only moderately helpful in accomplishing this; (2) respondents do not always trust the media; (3) young adults have not abandoned the newspaper; and (4) television was…
Microwave scattering models and basic experiments

NASA Technical Reports Server (NTRS)

Fung, Adrian K.

1989-01-01

Progress is summarized which has been made in four areas of study: (1) scattering model development for sparsely populated media, such as a forested area; (2) scattering model development for dense media, such as a sea ice medium or a snow covered terrain; (3) model development for randomly rough surfaces; and (4) design and conduct of basic scattering and attenuation experiments suitable for the verification of theoretical models.
Interactive basic mathematics web using Wordpress

NASA Astrophysics Data System (ADS)

Septia, Tika; Husna; Cesaria, Anna

2017-12-01

Wordpress is a popular open source tool that can be used for developing learning media. Basic Mathematics is the difficult subject for a physics student. The students need an interactive learning to improve their knowledge. The aims of this study were to develop the interactive media using Wordpress and to know the effectiveness of web as a learning media to improve the ICT Literacy students. This study used ADDIE models. The effectiveness of interactive web can be described as the students’ equipness of ICT literacy. The population is physics students. The findings show that the interactive web is valid for the content, presentation, linguistic, and graphic aspects. The results concluded that basic mathematic interactive web is effective to equip the learners ICT literacy of categories of high, medium, and low with the observations and questionnaires are in very good criteria.
Tuning metal-carboxylate coordination in crystalline metal-organic frameworks through surfactant media

NASA Astrophysics Data System (ADS)

Gao, Junkuo; Ye, Kaiqi; He, Mi; Xiong, Wei-Wei; Cao, Wenfang; Lee, Zhi Yi; Wang, Yue; Wu, Tom; Huo, Fengwei; Liu, Xiaogang; Zhang, Qichun

2013-10-01

Although it has been widely demonstrated that surfactants can efficiently control the size, shape and surface properties of micro/nanocrystals of metal-organic frameworks (MOFs) due to the strong interactions between surfactants and crystal facets of MOFs, the use of surfactants as reaction media to grow MOF single crystals is unprecedented. In addition, compared with ionic liquids, surfactants are much cheaper and can have multifunctional properties such as acidic, basic, neutral, cationic, anionic, or even block. These factors strongly motivate us to develop a new synthetic strategy: growing crystalline MOFs in surfactants. In this report, eight new two-dimensional (2D) or three-dimensional (3D) MOFs have been successfully synthesized in an industrially-abundant and environmentally-friendly surfactant: polyethylene glycol-200 (PEG-200). Eight different coordination modes of carboxylates, ranging from monodentate η1 mode to tetra-donor coordination μ3-η1:η2:η1 mode, have been founded in our research. The magnetic properties of Co-based MOFs were investigated and MOF NTU-Z6b showed a phase transition with a Curie temperature (Tc) at 5 K. Our strategy of growing crystalline MOFs in surfactant could offer exciting opportunities for preparing novel MOFs with diverse structures and interesting properties.
Media Education in Scotland. Outline Proposals for a Curriculum.

ERIC Educational Resources Information Center

Robinson, T. K.; And Others

This document, prepared for the Scottish Council for Educational Technology and the Scottish Film Council, sets forth basic principles on which discussions of the future of media education in Scotland might be based. The nature and scope of media education are reviewed, and media education is portrayed as a means of helping children and adults to…

The Politics and Coverage of Terror: From Media Images to Public Consciousness.

ERIC Educational Resources Information Center

Wittebols, James H.

This paper presents a typology of terrorism which is grounded in how media differentially cover each type. The typology challenges some of the basic assumptions, such as that the media "allow" themselves to be exploited by terrorists and "encourage" terrorism, and the conventional wisdom about the net effects of the media's…
29 CFR 29.2 - Definitions.

Code of Federal Regulations, 2012 CFR

2012-07-01

... of Labor. Electronic media means media that utilize electronics or electromechanical energy for the... Apprenticeship, or registration and/or approval by a recognized State Apprenticeship Agency, as meeting the basic...
29 CFR 29.2 - Definitions.

Code of Federal Regulations, 2014 CFR

2014-07-01

... of Labor. Electronic media means media that utilize electronics or electromechanical energy for the... Apprenticeship, or registration and/or approval by a recognized State Apprenticeship Agency, as meeting the basic...
29 CFR 29.2 - Definitions.

Code of Federal Regulations, 2013 CFR

2013-07-01

... of Labor. Electronic media means media that utilize electronics or electromechanical energy for the... Apprenticeship, or registration and/or approval by a recognized State Apprenticeship Agency, as meeting the basic...
The (lack of) relation between straylight and visual acuity. Two domains of the point-spread-function.

PubMed

van den Berg, Thomas J T P

2017-05-01

The effect of cataract and other media opacities on functional vision is typically assessed clinically using visual acuity. In both clinical and basic research, straylight (the functional result of light scattering in the eye) is commonly measured. The purpose of the present study was to determine the link between these two measures: is visual acuity in cataract and other media opacities related to straylight? Interdependence between acuity and straylight is addressed from three different points of view: (1) Methodological: can acuity differences affect the measurement value of straylight, and vice versa? (2) Basic optics: does the optical process of light scattering in the human eye affect both straylight and visual acuity? (3) Statistical: how strongly are acuity and straylight correlated in the practice of important clinical conditions? Experimental and theoretical aspects will be considered, with a focus on normal ageing and cataract formation. (1) Methodological: testing potential effects of acuity, artificially manipulated with positive trial lenses, showed no effect on measured straylight values. Since light scattering in the eye involves a low percentage of the light and has large angular spreading, contrast reduction due to straylight is limited, resulting in virtually absent acuity effects. (2) Basic optics: light scattering from the human donor eye lens is found to have virtually no effect in the centre of the point-spread-function, also for cataractous lenses, resulting in virtually absent acuity effects. (3) Statistical: literature data on straylight and visual acuity show a weak correlation for the important groups of normal ageing and cataract populations. The point-spread-function of the normal ageing and cataractous human eye is built upon two rather independent basic parts. Aberrations control the central peak. Light scattering controls the periphery from about 1° onwards. The way acuity and straylight are measured ensures no confounding between them. Statistically within the normal ageing and cataract populations, visual acuity and straylight vary quite independently from each other. Visual acuity losses with cataract and other media opacities are not due to straylight, but caused by aberrations and micro-aberrations. Straylight defines disability glare, and causes symptoms of glare, haloes, hazy vision etc. Overall, visual acuity and straylight are rather independent aspects of quality of vision. © 2017 The Author Ophthalmic & Physiological Optics © 2017 The College of Optometrists.
Who are the opinion leaders? The physicians, pharmacists, patients, and direct-to-consumer prescription drug advertising.

PubMed

Lee, Annisa Lai

2010-09-01

A popular perception holds that physicians prescribe requested drugs to patients influenced by mass mediated direct-to-consumer prescription drug advertising. The phenomenon poses a serious challenge to the two-step flow model, which emphasizes the influence of opinion leaders on their followers and their legitimating power over the informing power of the mass media. This study investigates a 2002 Food and Drug Administration (FDA) survey and finds that patients searching for drug information through mass and hybrid media in newspapers and magazines' small print, the Internet, and toll-free numbers are more likely to seek information through interpersonal communication channels like health care providers. Patients using small print, toll-free numbers, one's own physician, and other physicians are associated with influencing their physicians with various drug-requesting behaviors. But physicians only prescribe requested drugs to patients who are influenced by other health care providers, such as pharmacists and other physicians, not the mass media. The influence of expert opinion leaders of drugs is so strong that the patients even would switch from their own unyielding physicians who do not prescribe drugs as advised by the pharmacists. Physicians and patients all are influenced more by other expert opinion leaders of drugs than by the mass media and therefore still uphold the basic tenet of the two-step model.
A molecular rotor based ratiometric sensor for basic amino acids

NASA Astrophysics Data System (ADS)

Pettiwala, Aafrin M.; Singh, Prabhat K.

2018-01-01

The inevitable importance of basic amino acids, arginine and lysine, in human health and metabolism demands construction of efficient sensor systems for them. However, there are only limited reports on the 'ratiometric' detection of basic amino acids which is further restricted by the use of chemically complex sensor molecules, which impedes their prospect for practical applications. Herein, we report a ratiometric sensor system build on simple mechanism of disassociation of novel emissive Thioflavin-T H-aggregates from heparin surface, when subjected to interaction with basic amino acids. The strong and selective electrostatic and hydrogen bonding interaction of basic amino acids with heparin leads to large alteration in photophysical attributes of heparin bound Thioflavin-T, which forms a highly sensitive sensor platform for detection of basic amino acids in aqueous solution. These selective interactions between basic amino acids and heparin allow our sensor system to discriminate arginine and lysine from other amino acids. This unique mechanism of dissociation of Thioflavin-T aggregates from heparin surface provides ratiometric response on both fluorimetric and colorimetric outputs for detection of arginine and lysine, and thus it holds a significant advantage over other developed sensor systems which are restricted to single wavelength detection. Apart from the sensitivity and selectivity, our system also provides the advantage of simplicity, dual mode of sensing, and more importantly, it employs an inexpensive commercially available probe molecule, which is a significant advantage over other developed sensor systems that uses tedious synthesis protocol for the employed probe in the detection scheme, an impediment for practical applications. Additionally, our sensor system also shows response in complex biological media of serum samples.
Toppling Hierarchies? Media and Information Literacies, Ethnicity, and Performative Media Practices

ERIC Educational Resources Information Center

Drotner, Kirsten; Kobbernagel, Christian

2014-01-01

This article suggests how we should study media and information literacies (MIL) and do so at a time, when young people nurture these literacies through multiple media practices and across spaces of learning. Our basic argument is this: in order to gain a robust knowledge base for the development of MIL we need to study literacy practices beyond…
HIV/AIDS Basics

MedlinePlus

... talkHIV Act Against AIDS Get Email Updates on AAA Anonymous Feedback HIV/AIDS Media Infographics Syndicated Content ... talkHIV Act Against AIDS Get Email Updates on AAA Anonymous Feedback HIV/AIDS Media Infographics Syndicated Content ...
Separation of negatively charged carbohydrates by capillary electrophoresis.

PubMed

Linhardt, R J; Pervin, A

1996-01-12

Capillary electrophoresis (CE) has recently emerged as a highly promising technique consuming an extremely small amount of sample and capable of the rapid, high-resolution separation, characterization, and quantitation of analytes. CE has been used for the separation of biopolymers, including acidic carbohydrates. Since CE is basically an analytical method for ions, acidic carbohydrates that give anions in weakly acid, neutral, or alkaline media are often the direct objects of this method. The scope of this review is limited to the use of CE for the analysis of carbohydrates containing carboxylate, sulfate, and phosphate groups as well as neutral carbohydrates that have been derivatized to incorporate strongly acidic functionality, such as sulfonate groups.
The Use of Interactive Media Ispring Suite 8 Supported by Google SketchUp to Improve Students’ Geometry Skills Based on Hoffer’s Theory

NASA Astrophysics Data System (ADS)

Nurwijayanti, A.; Budiyono; Fitriana, L.

2018-04-01

The basic Geometry skills are needed by the students to solve the geometrical tasks in daily life. There are five aspects of the Geometry ability based on the Hoffer’s theory. They are visual, verbal, drawing, logical, and application. These are the abilities that the students in junior high school level need to master. The purpose of this study is to find out and describe the effectiveness of the interactive media supported by Google SketchUp to improve the students’ basic Geometry skills based on Hoffer’s theory. The subject in this research is 30 students from class 9E in Junior High School of Mojogedang 1, Karanganyar regency. This study uses a pre-test and post-test experiment and analyzed with the t-test hypothesis with the significant level of 5%. The result of this study can be seen from the diffeence average score between the pre-test and post-test, which shows a significance difference. It means that through the interactive media supported by Google SketchUp, the students’ five basic abilities are improved. Therefore, it can be concluded that the interactive media supported by Google SketchUp is potential and can be used to help the students in improving their basic Geometry skills based on Hoffer’s theory.
A randomized trial of social media from Circulation.

PubMed

Fox, Caroline S; Bonaca, Marc A; Ryan, John J; Massaro, Joseph M; Barry, Karen; Loscalzo, Joseph

2015-01-06

Medical journals use social media to distribute the findings of published articles. Whether social media exposure to original articles improves article impact metrics is uncertain. Articles were randomized to receive targeted social media exposure from Circulation, including postings on the journal's Facebook and Twitter feeds. The primary end point was 30-day article page views. We conducted an intention-to-treat analysis comparing article page views by the Wilcoxon Rank sum test between articles randomized to social media as compared with those in the control group, which received no social media from Circulation. Prespecified subgroups included article type (population/clinical/basic), US versus non-US corresponding author, and whether the article received an editorial. Overall, 243 articles were randomized: 121 in the social media arm and 122 in the control arm. There was no difference in median 30-day page views (409 [social media] versus 392 [control], P=0.80). No differences were observed by article type (clinical, population, or basic science; P=0.19), whether an article had an editorial (P=0.87), or whether the corresponding author was from the United States (P=0.73). A social media strategy for a cardiovascular journal did not increase the number of times an article was viewed. Further research is necessary to understand and quantify the ways in which social media can increase the impact of published cardiovascular research. © 2014 American Heart Association, Inc.
Assessment of Students' Media Competence: Test Results Analysis

ERIC Educational Resources Information Center

Federov, Alexander

2011-01-01

Ascertaining levels of media competence (development in the field of media culture) of students is based on the classification of indicators developed by the author. In accordance with this classification, audience is invited to a basic blocks of questions and tasks. The targets are: to detect the levels of motivational indicators of audience's…
Modern French and Russian Media Education in XXI Century (2000-2009)

ERIC Educational Resources Information Center

Fedorov, Alexander

2009-01-01

The author of this article thinks that the basic difficulties of wider introduction of media education in the Russian and French universities & schools first of all are connected with patent defect purposefully prepared of media educators; with the certain inertness of many educational establishments; with traditional approaches of the…
Learning Through Media; An IMC Handbook for Chelmsford Teachers.

ERIC Educational Resources Information Center

Morrow, James; Wallace, Daniel

This handbook is designed to provide basic information that is necessary to use the Chelmsford School System's Instructional Media Center (IMC). It defines six different media (print, sound, television, photography, movies and design) and suggests a series of separate classroom production activities in each. An emphasis is given to the ways in…
Analysis of capacitive force acting on a cantilever tip at solid/liquid interfaces

NASA Astrophysics Data System (ADS)

Umeda, Ken-ichi; Kobayashi, Kei; Oyabu, Noriaki; Hirata, Yoshiki; Matsushige, Kazumi; Yamada, Hirofumi

2013-04-01

Dielectric properties of biomolecules or biomembranes are directly related to their structures and biological activities. Capacitance force microscopy based on the cantilever deflection detection is a useful scanning probe technique that can map local dielectric constant. Here we report measurements and analysis of the capacitive force acting on a cantilever tip at solid/liquid interfaces induced by application of an alternating voltage to explore the feasibility of the measurements of local dielectric constant by the voltage modulation technique in aqueous solutions. The results presented here suggest that the local dielectric constant measurements by the conventional voltage modulation technique are basically possible even in polar liquid media. However, the cantilever deflection is not only induced by the electrostatic force, but also by the surface stress, which does not include the local dielectric information. Moreover, since the voltage applied between the tip and sample are divided by the electric double layer and the bulk polar liquid, the capacitive force acting on the apex of the tip are strongly attenuated. For these reasons, the lateral resolution in the local dielectric constant measurements is expected to be deteriorated in polar liquid media depending on the magnitude of dielectric response. Finally, we present the criteria for local dielectric constant measurements with a high lateral resolution in polar liquid media.
A molecular rotor based ratiometric sensor for basic amino acids.

PubMed

Pettiwala, Aafrin M; Singh, Prabhat K

2018-01-05

The inevitable importance of basic amino acids, arginine and lysine, in human health and metabolism demands construction of efficient sensor systems for them. However, there are only limited reports on the 'ratiometric' detection of basic amino acids which is further restricted by the use of chemically complex sensor molecules, which impedes their prospect for practical applications. Herein, we report a ratiometric sensor system build on simple mechanism of disassociation of novel emissive Thioflavin-T H-aggregates from heparin surface, when subjected to interaction with basic amino acids. The strong and selective electrostatic and hydrogen bonding interaction of basic amino acids with heparin leads to large alteration in photophysical attributes of heparin bound Thioflavin-T, which forms a highly sensitive sensor platform for detection of basic amino acids in aqueous solution. These selective interactions between basic amino acids and heparin allow our sensor system to discriminate arginine and lysine from other amino acids. This unique mechanism of dissociation of Thioflavin-T aggregates from heparin surface provides ratiometric response on both fluorimetric and colorimetric outputs for detection of arginine and lysine, and thus it holds a significant advantage over other developed sensor systems which are restricted to single wavelength detection. Apart from the sensitivity and selectivity, our system also provides the advantage of simplicity, dual mode of sensing, and more importantly, it employs an inexpensive commercially available probe molecule, which is a significant advantage over other developed sensor systems that uses tedious synthesis protocol for the employed probe in the detection scheme, an impediment for practical applications. Additionally, our sensor system also shows response in complex biological media of serum samples. Copyright © 2017 Elsevier B.V. All rights reserved.
Exploring Education-Related Use of Social Media: Business Students Perspectives in a Changing India

ERIC Educational Resources Information Center

Bharucha, Jehangir

2018-01-01

Purpose: Within a connectivist learning model, the purpose of this paper is to investigate the adoption of social media for educational purposes in India, a hitherto unexplored area of research. The basic research thrust is on students' experiences when social media is incorporated into higher education. This research tries to gather evidence on…
The Analysis of L1 Teaching Programs in England, Canada, the USA and Australia Regarding Media Literacy and Their Applicability to Turkish Language Teaching

ERIC Educational Resources Information Center

Tüzel, Sait

2013-01-01

Two basic approaches namely "independent lesson approach" and "integration approach" appear in teaching media literacy. Media literacy is regarded as a separate lesson in the education program like mathematics and social sciences in "independent lesson approach". However, in "integration approach",…
Analyzing Public Discourse: Using Media Content Analysis to Understand the Policy Process

ERIC Educational Resources Information Center

Saraisky, Nancy Green

2016-01-01

One of the most basic and obvious sources of data for education policy analysis is text. This article discusses content analysis as an important part of the methodological toolbox for elucidating patterns and trends about education policy. Focusing specifically on media, I show how media content analysis can produce nuanced insights about the ways…

Pupillary Responses to Robotic and Human Emotions: The Uncanny Valley and Media Equation Confirmed.

PubMed

Reuten, Anne; van Dam, Maureen; Naber, Marnix

2018-01-01

Physiological responses during human-robots interaction are useful alternatives to subjective measures of uncanny feelings for nearly humanlike robots (uncanny valley) and comparable emotional responses between humans and robots (media equation). However, no studies have employed the easily accessible measure of pupillometry to confirm the uncanny valley and media equation hypotheses, evidence in favor of the existence of these hypotheses in interaction with emotional robots is scarce, and previous studies have not controlled for low level image statistics across robot appearances. We therefore recorded pupil size of 40 participants that viewed and rated pictures of robotic and human faces that expressed a variety of basic emotions. The robotic faces varied along the dimension of human likeness from cartoonish to humanlike. We strictly controlled for confounding factors by removing backgrounds, hair, and color, and by equalizing low level image statistics. After the presentation phase, participants indicated to what extent the robots appeared uncanny and humanlike, and whether they could imagine social interaction with the robots in real life situations. The results show that robots rated as nearly humanlike scored higher on uncanniness, scored lower on imagined social interaction, evoked weaker pupil dilations, and their emotional expressions were more difficult to recognize. Pupils dilated most strongly to negative expressions and the pattern of pupil responses across emotions was highly similar between robot and human stimuli. These results highlight the usefulness of pupillometry in emotion studies and robot design by confirming the uncanny valley and media equation hypotheses.
Pupillary Responses to Robotic and Human Emotions: The Uncanny Valley and Media Equation Confirmed

PubMed Central

Reuten, Anne; van Dam, Maureen; Naber, Marnix

2018-01-01

Physiological responses during human–robots interaction are useful alternatives to subjective measures of uncanny feelings for nearly humanlike robots (uncanny valley) and comparable emotional responses between humans and robots (media equation). However, no studies have employed the easily accessible measure of pupillometry to confirm the uncanny valley and media equation hypotheses, evidence in favor of the existence of these hypotheses in interaction with emotional robots is scarce, and previous studies have not controlled for low level image statistics across robot appearances. We therefore recorded pupil size of 40 participants that viewed and rated pictures of robotic and human faces that expressed a variety of basic emotions. The robotic faces varied along the dimension of human likeness from cartoonish to humanlike. We strictly controlled for confounding factors by removing backgrounds, hair, and color, and by equalizing low level image statistics. After the presentation phase, participants indicated to what extent the robots appeared uncanny and humanlike, and whether they could imagine social interaction with the robots in real life situations. The results show that robots rated as nearly humanlike scored higher on uncanniness, scored lower on imagined social interaction, evoked weaker pupil dilations, and their emotional expressions were more difficult to recognize. Pupils dilated most strongly to negative expressions and the pattern of pupil responses across emotions was highly similar between robot and human stimuli. These results highlight the usefulness of pupillometry in emotion studies and robot design by confirming the uncanny valley and media equation hypotheses. PMID:29875722
Social media basics for orthodontists.

PubMed

Jorgensen, Greg

2012-04-01

One of the most common buzz words in today's online world is "social media." This article defines social media, explains why it is important to practicing orthodontists, and provides information about how doctors can incorporate it into their practices. Five of the most useful social media tools are described in detail, outlining the strengths, weaknesses, opportunities, and risks inherent in each. Copyright © 2012 American Association of Orthodontists. Published by Mosby, Inc. All rights reserved.
A STUDY OF THE CONCENTRATION OF EDUCATIONAL MEDIA RESOURCES TO ASSIST IN CERTAIN EDUCATION PROGRAMS OF NATIONAL CONCERN. PART 1, EDUCATION OF THE CULTURALLY DISADVANTAGED. FINAL REPORT.

ERIC Educational Resources Information Center

DAVIS, O.L., JR.; MATHEWS, VIRGINIA H.

THE ROLE OF EDUCATIONAL MEDIA IN THE EDUCATION OF THE CULTURALLY DISADVANTAGED WAS ANALYZED BY A COUNCIL SUBCOMMITTEE, APPOINTED IN MAY 1965. BASIC FINDINGS INCLUDE--(1) MEDIA RESOURCES SEEMED TO BE BOTH LITTLE USED, AND INEFFECTIVELY USED, (2) PROGRAM ADMINISTRATORS SEEMED TO BE UNAWARE OF THE AVAILABILITY AND EFFECTIVENESS OF MEDIA RESOURCES,…
5 CFR 293.102 - Definitions.

Code of Federal Regulations, 2010 CFR

2010-01-01

... Administrative Personnel OFFICE OF PERSONNEL MANAGEMENT CIVIL SERVICE REGULATIONS PERSONNEL RECORDS Basic..., magnetic storage media, micro storage media, and other documentary materials regardless of physical form or... procedure; Maintain includes collect, use, or disseminate; Office means the Office of Personnel Management...
Education: The Basics. The Basics

ERIC Educational Resources Information Center

Wood, Kay

2011-01-01

Everyone knows that education is important, we are confronted daily by discussion of it in the media and by politicians, but how much do we really know about education? "Education: The Basics" is a lively and engaging introduction to education as an academic subject, taking into account both theory and practice. Covering the schooling system, the…
Electromagnetism on anisotropic fractal media

NASA Astrophysics Data System (ADS)

Ostoja-Starzewski, Martin

2013-04-01

Basic equations of electromagnetic fields in anisotropic fractal media are obtained using a dimensional regularization approach. First, a formulation based on product measures is shown to satisfy the four basic identities of the vector calculus. This allows a generalization of the Green-Gauss and Stokes theorems as well as the charge conservation equation on anisotropic fractals. Then, pursuing the conceptual approach, we derive the Faraday and Ampère laws for such fractal media, which, along with two auxiliary null-divergence conditions, effectively give the modified Maxwell equations. Proceeding on a separate track, we employ a variational principle for electromagnetic fields, appropriately adapted to fractal media, so as to independently derive the same forms of these two laws. It is next found that the parabolic (for a conducting medium) and the hyperbolic (for a dielectric medium) equations involve modified gradient operators, while the Poynting vector has the same form as in the non-fractal case. Finally, Maxwell's electromagnetic stress tensor is reformulated for fractal systems. In all the cases, the derived equations for fractal media depend explicitly on fractal dimensions in three different directions and reduce to conventional forms for continuous media with Euclidean geometries upon setting these each of dimensions equal to unity.
Emulsions in porous media: From single droplet behavior to applications for oil recovery.

PubMed

Perazzo, Antonio; Tomaiuolo, Giovanna; Preziosi, Valentina; Guido, Stefano

2018-06-01

Emulsions are suspensions of droplets ubiquitous in oil recovery from underground reservoirs. Oil is typically trapped in geological porous media where emulsions are either formed in situ or injected to elicit oil mobilization and thus enhance the amount of oil recovered. Here, we briefly review basic concepts on geometrical and wetting features of porous media, including thin film stability and fluids penetration modes, which are more relevant for oil recovery and oil-contaminated aquifers. Then, we focus on the description of emulsion flow in porous media spanning from the behaviour of single droplets to the collective flow of a suspension of droplets, including the effect of bulk and interfacial rheology, hydrodynamic and physico-chemical interactions. Finally, we describe the particular case of emulsions used in underground porous media for enhanced oil recovery, thereby discussing some perspectives of future work. Although focused on oil recovery related topics, most of the insights we provide are useful towards remediation of oil-contaminated aquifers and for a basic understanding of emulsion flow in any kind of porous media, such as biological tissues. Copyright © 2018 Elsevier B.V. All rights reserved.
Characterization of the basic charge variants of a human IgG1: effect of copper concentration in cell culture media.

PubMed

Kaschak, Timothy; Boyd, Daniel; Lu, Franklin; Derfus, Gayle; Kluck, Brian; Nogal, Bartek; Emery, Craig; Summers, Christie; Zheng, Kai; Bayer, Robert; Amanullah, Ashraf; Yan, Boxu

2011-01-01

We report a case study of an IgG1 with a unique basic charge variant profile caused by C-terminal proline amidation on either one or two heavy chains. The proline amidation was sensitive to copper ion concentration in the production media during cell culture: the higher the Cu ( 2+) ion concentration, the higher the level of proline amidation detected. This conclusion was supported by the analysis of samples that revealed direct correlation between the proline amidation level observed from peptide maps and the level of basic peaks measured by imaged capillary isoelectric focusing and a pH gradient ion-exchange chromatography method. The importance of these observations to therapeutic antibody production is discussed.
Climbing social media in medicine's hierarchy of needs.

PubMed

Chretien, Katherine C; Kind, Terry

2014-10-01

The social media and medicine landscape is evolving rapidly. Early research, social media policies, and educational efforts focused on risk avoidance, while more current efforts have encouraged reflection and explored opportunities. This trajectory has affirmed physicians' professional commitment to maintaining public trust in the face of new challenges in the digital age. In this Commentary, the authors propose viewing physicians' social media use as a hierarchy of needs, similar to Maslow's psychological theory which posits that more basic levels of needs must be met before higher, aspirational levels can be fully attained. The three levels in the social media in medicine's hierarchy of needs are Security, Reflection, and Discovery. Critical to this model is respecting the essential need for Security in order to move towards Reflection and into Discovery. The social media in medicine hierarchy of needs pyramid rests on a foundation of Public Trust. How physicians as a profession have responded to past--and continue to respond to present and future--social media challenges to professionalism reveals what matters most: maintaining public trust and honoring the physicians' contract with society. A victory for online professionalism would be providing trainees with the tools and guidance needed to ascend to Discovery, while ensuring that their basic social media needs are first met. To do this, physician educators need to continue increasing trainees' awareness through designing relevant curricula, encouraging reflection, and providing positive role modeling and effective mentorship.
Effect of (social) media on the political figure fever model: Jokowi-fever model

NASA Astrophysics Data System (ADS)

Yong, Benny; Samat, Nor Azah

2016-02-01

In recent years, political figures begin to utilize social media as one of alternative to engage in communication with their supporters. Publics referred to Jokowi, one of the candidates in Indonesia presidential election in 2014, as the first politician in Indonesia to truly understand the power of social media. Social media is very important in shaping public opinion. In this paper, effect of social media on the Jokowi-fever model in a closed population will be discussed. Supporter population is divided into three class sub-population, i.e susceptible supporters, Jokowi infected supporters, and recovered supporters. For case no positive media, there are two equilibrium points; the Jokowi-fever free equilibrium point in which it locally stable if basic reproductive ratio less than one and the Jokowi-fever endemic equilibrium point in which it locally stable if basic reproductive ratio greater than one. For case no negative media, there is only the Jokowi-fever endemic equilibrium point in which it locally stable if the condition is satisfied. Generally, for case positive media proportion is positive, there is no Jokowi-fever free equilibrium point. The numerical result shows that social media gives significantly effect on Jokowi-fever model, a sharp increase or a sharp decrease in the number of Jokowi infected supporters. It is also shown that the boredom rate is one of the sensitive parameters in the Jokowi-fever model; it affects the number of Jokowi infected supporters.
Using Film and Social Media for Successful Earth Science Outreach in Nepal and Indonesia

NASA Astrophysics Data System (ADS)

Kerlow, I.

2016-12-01

We are using social media effectively to bring a documentary film about earthquakes in Nepal to Nepalese audiences that live in tectonically hazardous areas, and a tsunami preparedness movie to the people of Banda Aceh. The one-week online preview of the Nepali-subtitled version of the movie received over 79,000 post Facebook Likes. The movie makes extensive use of animation techniques in addition to live action to explain basic facts about seismic activity in the Himalaya region and also basic preparedness concepts. This presentation reviews the social media campaign designed and implemented to bring preparedness movies to large local audiences, as well as the development, production, and world distribution of natural hazards documentary films with scientific depth but designed for a mainstream audience.
The relationship between media literacy and health literacy among pregnant women in health centers of Isfahan

PubMed Central

Akbarinejad, Farideh; Soleymani, Mohammad Reza; Shahrzadi, Leila

2017-01-01

Background: The ability to access, analyze, evaluate, and convey information in various forms of media including print and nonprint requires media literacy, but the capacity to obtain, process, and understand basic information and services needed for appropriate decisions regarding health, considered an important element in a woman's ability to participate in health promotion and prevention activities for herself and her children, is needed to a level of health literacy. The purpose of this study was to determine the relationship between media literacy and health literacy among pregnant women in health centers in Isfahan. Materials and Methods: This study used a descriptive correlation study. Data collection tools include Shahin media literacy and functional health literacy in adults’ questionnaires. The population include pregnant women in health centers of Isfahan (4080 people). Ten out of the 351 health centers in Isfahan were selected as cluster. Data were analyzed using both descriptive and inferential statistics. Results: Media literacy of respondents in the five dimensions was significantly lower than average 61.5% of pregnant women have inadequate health literacy, 18.8% had marginal health literacy, and only 19.7% of them have had adequate health literacy. There was a significant positive relationship between media literacy and health literacy among pregnant women. Conclusion: This study showed that the majority of pregnant women covered by health centers had limited health literacy and media literacy. Since one of the basic requirements for the utilization of health information is needed for adequate media literacy, promotion of media literacy is necessary for the respondents. PMID:28546982
The relationship between media literacy and health literacy among pregnant women in health centers of Isfahan.

PubMed

Akbarinejad, Farideh; Soleymani, Mohammad Reza; Shahrzadi, Leila

2017-01-01

The ability to access, analyze, evaluate, and convey information in various forms of media including print and nonprint requires media literacy, but the capacity to obtain, process, and understand basic information and services needed for appropriate decisions regarding health, considered an important element in a woman's ability to participate in health promotion and prevention activities for herself and her children, is needed to a level of health literacy. The purpose of this study was to determine the relationship between media literacy and health literacy among pregnant women in health centers in Isfahan. This study used a descriptive correlation study. Data collection tools include Shahin media literacy and functional health literacy in adults' questionnaires. The population include pregnant women in health centers of Isfahan (4080 people). Ten out of the 351 health centers in Isfahan were selected as cluster. Data were analyzed using both descriptive and inferential statistics. Media literacy of respondents in the five dimensions was significantly lower than average 61.5% of pregnant women have inadequate health literacy, 18.8% had marginal health literacy, and only 19.7% of them have had adequate health literacy. There was a significant positive relationship between media literacy and health literacy among pregnant women. This study showed that the majority of pregnant women covered by health centers had limited health literacy and media literacy. Since one of the basic requirements for the utilization of health information is needed for adequate media literacy, promotion of media literacy is necessary for the respondents.
Association of Various Components of Media Literacy and Adolescent Smoking

PubMed Central

Primack, Brian A.; Hobbs, Renee

2010-01-01

Objective To determine which specific aspects of media literacy were most strongly associated with smoking outcomes. Methods Students at a public high school responded to cross-sectional survey items measuring smoking outcomes, components of media literacy, and other variables. Results Of the 1211 participants, 19% were current smokers (N = 216) and 40% of the nonsmokers (N = 342) were susceptible to smoking. In the adjusted models, current smoking was most strongly related to representation-reality domain items, but susceptibility to smoking was associated with each of the media literacy domains. Conclusion Varied relationships exist between individual facets of media literacy and smoking outcomes. PMID:18844513
Learning basic programming using CLIS through gamification

NASA Astrophysics Data System (ADS)

Prabawa, H. W.; Sutarno, H.; Kusnendar, J.; Rahmah, F.

2018-05-01

The difficulty of understanding programming concept is a major problem in basic programming lessons. Based on the results of preliminary studies, 60% of students reveal the monotonous of learning process caused by the limited number of media. Children Learning in Science (CLIS) method was chosen as solution because CLIS has facilitated students’ initial knowledge to be optimized into conceptual knowledge. Technological involvement in CLIS (gamification) helped students to understand basic programming concept. This research developed a media using CLIS method with gamification elements to increase the excitement of learning process. This research declared that multimedia is considered good by students, especially regarding the mechanical aspects of multimedia, multimedia elements and aspects of multimedia information structure. Multimedia gamification learning with the CLIS model showed increased number of students’ concept understanding.
The Right Stuff: Essential Resources for Managing Your Middle School Media Center.

ERIC Educational Resources Information Center

Manczuk, Suzanne

1999-01-01

Describes the following resources for managing a middle school media center: literature bibliographies with on-target middle school recommendations and useful annotations; resources for teaching primary sources; resources on censorship and banned books; basic Internet guides; copyright-law resources; information-literacy standards; and…
Basic Books in the Mass Media.

ERIC Educational Resources Information Center

Blum, Eleanor

References to information on the background, structure, function, contents, and effects of mass communications are provided in this annotated booklist. Material is included on theory, popular culture, the Black press, communications technology, the underground press and film, and mass media violence and the entries are arranged according to the…
Instructional Media Center. Educational Facility Series. A Guide to Planning.

ERIC Educational Resources Information Center

Esposito, Nicholas A., Ed.

General recommendations are set forth regarding aesthetics, acoustics, lighting, temperature control, location, and layout of the instructional media center. Consideration is given to spatial relationships, equipment and furnishings, and suggestions are included regarding basic and advance facilities for primary, middle and secondary schools. (FS)
Mass Media and Society.

ERIC Educational Resources Information Center

Wells, Alan

Designed to serve as a basic text for general liberal arts courses in mass communication, this book presents essays, largely from recent magazine articles, written from the layman (although there are a few more overtly scholarly articles). It begins with an examination of the media industries in the United States, treating them as complex…

Student Inquiry in the Research Process: Part I: Inquiry Research Basics.

ERIC Educational Resources Information Center

Preddy, Leslie B.

2002-01-01

Discusses the appropriate use of inquiry among students, teachers, and library media specialists. Topics include planning for an inquiry research project; collaboration between the library media specialist and classroom teacher; national goals, standards, and best practices; teacher roles for inquiry; and evaluating inquiry research. (LRW)
Effects of media stray field on electromigration characteristics in current-perpendicular-to-plane giant magnetoresistance spin-valve read sensors

NASA Astrophysics Data System (ADS)

Gui Zeng, Ding; Lee, Kyoung-il; Chung, Kyung-Won; Bae, Seongtae

2012-05-01

Effects of magnetic stray field retrieved from both longitudinal and perpendicular magnetic recording media (denoted by "media stray field") on electromigration (EM) characteristics of current-perpendicular-to-plane (CPP) giant magnetoresistance spin-valve (GMR SV) read sensors have been numerically studied to explore the electrical and magnetic stability of the read sensor under real operation. The mean-time-to-failure (MTTF) of the CPP GMR SV read sensors was found to have a strong dependence on the physical parameters of the recording media and recorded information status, such as the pulse width of media stray field, the bit length, and the head moving velocity. According to the numerical calculation results, it was confirmed that in the longitudinal media, the shorter the stray field pulse width (i.e., the sharper the media transition) allows for the longer MTTF of the CPP GMR SV read sensors; while in the perpendicular media, the sharper the media transition gives rise to a shorter MTTF. Interestingly, it was also revealed that the MTTF could be improved by reducing the bit length as well as increasing the head velocity in both longitudinal and perpendicular media. Furthermore, the bit distribution patterns, especially the number of consecutive `0' bits strongly affected the MTTF of GMR SV read sensors. The strong dependences of MTTF on the media stray field during CPP GMR SV sensor operation are thought to be mainly attributed to the thermal cycling (temperature rise and fall) caused by the resistance change due to GMR effects.
Stress Wave Interactions with Tunnels Buried in Well-Characterized Jointed Media.

DTIC Science & Technology

1980-06-01

27 14 Particle Velocity and Principal Stress Fields at 62 jisec for the Elastic- Plastic Media Model (Case 1, 0.8 kbar...is used; the basic formulation is similar to the HEMP code (Ref. 3) . Tn numerical solutions and material properties are luscriben in Section 3. 3...media is 16A rock simulant. The elastic- plastic properties are modeled with the following parameters: Bulk Modulus K = .131 Mbar Shear Modulus G
Administering Instructional Media Programs.

ERIC Educational Resources Information Center

Erickson, Carlton W. H.

This book presents a wide discussion of the educational and administrative tasks of the instructional media program director. It includes guidelines, principles, case studies, and examples of advanced media use, with emphasis on audiovisual media, the area in which innovation has occurred most. Strong leadership, technological competence, and good…
A phase-field method to analyze the dynamics of immiscible fluids in porous media

NASA Astrophysics Data System (ADS)

de Paoli, Marco; Roccon, Alessio; Zonta, Francesco; Soldati, Alfredo

2017-11-01

Liquid carbon dioxide (CO2) injected into geological formations (filled with brine) is not completely soluble in the surrounding fluid. For this reason, complex transport phenomena may occur across the interface that separates the two phases (CO2+brine and brine). Inspired by this geophysical instance, we used a Phase-Field Method (PFM) to describe the dynamics of two immiscible fluids in satured porous media. The basic idea of the PFM is to introduce an order parameter (ϕ) that varies continuously across the interfacial layer between the phases and is uniform in the bulk. The equation that describes the distribution of ϕ is the Cahn-Hilliard (CH) equation, which is coupled with the Darcy equation (to evaluate fluid velocity) through the buoyancy and Korteweg stress terms. The governing equations are solved through a pseudo-spectral technique (Fourier-Chebyshev). Our results show that the value of the surface tension between the two phases strongly influences the initial and the long term dynamics of the system. We believe that the proposed numerical approach, which grants an accurate evaluation of the interfacial fluxes of momentum/energy/species, is attractive to describe the transfer mechanism and the overall dynamics of immiscible and partially miscible phases.
Microscopic Virtual Media (MVM) in Physics Learning: Case Study on Students Understanding of Heat Transfer

NASA Astrophysics Data System (ADS)

Wibowo, F. C.; Suhandi, A.; Rusdiana, D.; Darman, D. R.; Ruhiat, Y.; Denny, Y. R.; Suherman; Fatah, A.

2016-08-01

A Study area in physics learning is purposeful on the effects of various types of learning interventions to help students construct the basic of scientific conception about physics. Microscopic Virtual Media (MVM) are applications for physics learning to support powerful modelling microscopic involving physics concepts and processes. In this study groups (experimental) of 18±20 years old, students were studied to determine the role of MVM in the development of functional understanding of the concepts of thermal expansion in heat transfer. The experimental group used MVM in learning process. The results show that students who learned with virtual media exhibited significantly higher scores in the research tasks. Our findings proved that the MVM may be used as an alternative instructional tool, in order to help students to confront and constructed their basic of scientific conception and developed their understanding.
On Basic Needs and Modest Media.

ERIC Educational Resources Information Center

Gunter, Jock

1978-01-01

The need for grass-roots participation and local control in whatever technology is used to meet basic educational needs is stressed. Successful uses of the audio cassette recorder and the portable half-inch video recorder are described; the 8-mm sound camera and video player are also suggested as viable "modest" technologies. (JEG)
Implementation of a Broadband Cable System on a University Campus.

ERIC Educational Resources Information Center

Rhoadarmer, Michael

1995-01-01

Discusses broadband communications; broadband coaxial cable and its utility in the media center; basic electronics of radio signals (radio frequency, radio band, bandwidth, MHz, skimming, decibels, sloped amplifiers); engineering basics (insertion loss, splitter, tap, and three beats); and factors to consider before designing a campus broadband…
Basic Drafting: Book One.

ERIC Educational Resources Information Center

Davis, Ronald; And Others

The first of a two-book course in drafting, this manual consists of 13 topics in the following units: introduction to drafting, general safety, basic tools and lines, major equipment, applying for a job, media, lettering, reproduction, drawing sheet layout, architect's scale usage, civil engineer's scale usage, mechanical engineer's scale usage,…
Fractional vector calculus for fractional advection dispersion

NASA Astrophysics Data System (ADS)

Meerschaert, Mark M.; Mortensen, Jeff; Wheatcraft, Stephen W.

2006-07-01

We develop the basic tools of fractional vector calculus including a fractional derivative version of the gradient, divergence, and curl, and a fractional divergence theorem and Stokes theorem. These basic tools are then applied to provide a physical explanation for the fractional advection-dispersion equation for flow in heterogeneous porous media.
Basics of Videodisc and Optical Disk Technology.

ERIC Educational Resources Information Center

Paris, Judith

1983-01-01

Outlines basic videodisc and optical disk technology describing both optical and capacitance videodisc technology. Optical disk technology is defined as a mass digital image and data storage device and briefly compared with other information storage media including magnetic tape and microforms. The future of videodisc and optical disk is…
The New Guide to Effective Media Relations. The Best of "CASE Currents."

ERIC Educational Resources Information Center

Raley, Nancy, Ed.; Carter, Laura, Ed.

Developing an effective communications program is crucial for the survival of colleges, universities, and independent schools because they must be well understood and have broad public support. This guide to media relations compiles articles from "CASE Currents" into five sections: "The Basics of a News Service" (17 papers);…
Scientists and the Press: Are They Really Strangers?

ERIC Educational Resources Information Center

Dunwoody, Sharon; Scott, Bryon T.

A group of 111 basic and applied scientists from two Ohio university campuses was interviewed to gather data about the amount of contact between scientists and media reporters, and the effects of such contact on scientists' attitudes toward media coverage of science. The data indicated that scientists had been interviewed by journalists much more…
77 FR 39741 - Solicitation for a Cooperative Agreement-Curricula Review and Revision: NIC Trainer Development...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-07-05

... virtual instructor-led trainings on, for example, distance learning or the effective use of social media in a learning environment. This medium is also ideal for orientation, expectations, and other basics; (C) Reading assignments on current research; (D) Discussion forums, blogs, and/or social media...
Fueling a Third Paradigm of Education: The Pedagogical Implications of Digital, Social and Mobile Media

ERIC Educational Resources Information Center

Pavlik, John V.

2015-01-01

Emerging technologies are fueling a third paradigm of education. Digital, networked and mobile media are enabling a disruptive transformation of the teaching and learning process. This paradigm challenges traditional assumptions that have long characterized educational institutions and processes, including basic notions of space, time, content,…
CHEMICAL TRANSFORMATIONS USING NON-TRADITIONAL APPROACHES: MICROWAVE-ASSISTED GREENER SYNTHESES IN AQUEOUS MEDIA OR UNDER SOLVENT-FREE CONDITIONS

EPA Science Inventory

Microwave (MW) irradiation in conjunction with water as reaction media has proven to be a 'greener' chemical approach for expeditious N-alkylation reactions of amines and hydrazines wherein the reactions under mildly basic conditions afford tertiary amines and double N<...

Learning and Role of the Family in New Media Environment

ERIC Educational Resources Information Center

Dimic, Jasmina Vrkic; Petani, Rozana; Tolic, Mirela

2012-01-01

Media are inseparable from upbringing and education. Different information sources should be a supplement to the basic educational relation between the teacher and students. But, immediate and dialogue based relation between the students and teacher, and between parents and their children, cannot be replaced or suppressed by any type of media…

Stability and bifurcation for an SEIS epidemic model with the impact of media

NASA Astrophysics Data System (ADS)

Huo, Hai-Feng; Yang, Peng; Xiang, Hong

2018-01-01

A novel SEIS epidemic model with the impact of media is introduced. By analyzing the characteristic equation of equilibrium, the basic reproduction number is obtained and the stability of the steady states is proved. The occurrence of a forward, backward and Hopf bifurcation is derived. Numerical simulations and sensitivity analysis are performed. Our results manifest that media can regard as a good indicator in controlling the emergence and spread of the epidemic disease.

Tuning metal–carboxylate coordination in crystalline metal–organic frameworks through surfactant media

DOE Office of Scientific and Technical Information (OSTI.GOV)

Gao, Junkuo; Ye, Kaiqi; State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012

Although it has been widely demonstrated that surfactants can efficiently control the size, shape and surface properties of micro/nanocrystals of metal–organic frameworks (MOFs) due to the strong interactions between surfactants and crystal facets of MOFs, the use of surfactants as reaction media to grow MOF single crystals is unprecedented. In addition, compared with ionic liquids, surfactants are much cheaper and can have multifunctional properties such as acidic, basic, neutral, cationic, anionic, or even block. These factors strongly motivate us to develop a new synthetic strategy: growing crystalline MOFs in surfactants. In this report, eight new two-dimensional (2D) or three-dimensional (3D)more » MOFs have been successfully synthesized in an industrially-abundant and environmentally-friendly surfactant: polyethylene glycol-200 (PEG-200). Eight different coordination modes of carboxylates, ranging from monodentate η{sup 1} mode to tetra-donor coordination µ{sub 3}-η{sup 1}:η{sup 2}:η{sup 1} mode, have been founded in our research. The magnetic properties of Co-based MOFs were investigated and MOF NTU-Z6b showed a phase transition with a Curie temperature (T{sub c}) at 5 K. Our strategy of growing crystalline MOFs in surfactant could offer exciting opportunities for preparing novel MOFs with diverse structures and interesting properties. - Graphical abstract: Surfactants have been used as reaction media to grow MOF single crystals for the first time. Eight new two-dimensional or three-dimensional MOFs were successfully synthesized in surfactant polyethylene glycol-200 (PEG-200). Coordination modes of carboxylates up to eight were founded. Our strategy of growing crystalline MOFs in surfactant could offer exciting opportunities for preparing novel MOFs with diverse structures and interesting properties. Display Omitted - Highlights: • Surfactant-thermal synthesis of crystalline metal–organic frameworks. • Eight new 2-D or 3-D metal–organic frameworks. • Eight different metal–carboxylate coordination modes.« less

Rapid surface-biostructure interaction analysis using strong metal-based nanomagnets.

PubMed

Rotzetter, Aline C C; Schumacher, Christoph M; Zako, Tamotsu; Stark, Wendelin J; Maeda, Mizuo

2013-11-19

Nanomaterials are increasingly suggested for the selective adsorption and extraction of complex compounds in biomedicine. Binding of the latter requires specific surface modifications of the nanostructures. However, even complicated macromolecules such as proteins can afford affinities toward basic surface characteristics such as hydrophobicity, topology, and electrostatic charge. In this study, we address these more basic physical interactions. In a model system, the interaction of bovine serum albumin and amyloid β 42 fibrillar aggregates with carbon-coated cobalt nanoparticles, functionalized with various polymers differing in character, was studied. The possibility of rapid magnetic separation upon binding to the surface represents a valuable tool for studying surface interactions and selectivities. We find that the surface interaction of Aβ 42 fibrillar aggregates is mostly hydrophobic in nature. Because bovine serum albumin (BSA) is conformationally adaptive, it is known to bind surfaces with widely differing properties (charge, topology, and hydrophobicity). However, the rate of tight binding (no desorption upon washing) can vary largely depending on the extent of necessary conformational changes for a specific surface. We found that BSA can only bind slowly to polyethylenimine-coated nanomagnets. Under competitive conditions (high excess BSA compared to that for β 42 fibrillar aggregates), this effect is beneficial for targeting the fibrillar species. These findings highlight the possibility of selective extractions from complex media when advantageous basic physical surface properties are chosen.

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Boot Camp for Occupational Health Nurses: Understanding Social Media.

PubMed

Wolf, Debra M; Olszewski, Kimberly

2015-08-01

Social media is a buzzword frequently referred to in marketing materials, general media, and personal conversations. Although many refer to the term social media, some individuals do not understand its meaning or how it affects their daily lives at work and home. Since the expansion of the Internet to web 2.0, multiple platforms of communication occur virtually through various social media. Understanding and learning how to use these platforms are essential to stay connected with friends, family, and colleagues; advance connections to professional organizations; and extend educational opportunities. This article presents basic information for occupational health nurses to improve their understanding of social media and how to communicate virtually using different platforms safely and securely. © 2015 The Author(s).

Media literacy and remote community development in Eastern Indonesia Region

NASA Astrophysics Data System (ADS)

Aras, M.

2018-03-01

This study focused on media literacy phenomenon and educational development of remote communities in the eastern Indonesia region. Therefore, this study used the qualitative approach. The research was done by using direct observation and depth-interview. The research results showed that (1) the media literacy phenomenon of remote community in eastern Indonesia region was apprehensive. This was due to lack of access to information or media exposure through print media, electronic media, and social media. Therefore, the implication was the education awareness of the local community. The media literacy community has a strong relation with public awareness in improving education, and (2) the role of media in the development as facilitators or means of socialization to convey messages related to sustainable development programs in Indonesia. The current media phenomenon had become a necessity, without the exception of the remote communities. The development of an area was also characterized by the increasing education of its citizen and media became one of supporting factors that can motivate the citizen in gaining knowledge. It meant that media literacy community has strong relationships with people awareness in increasing their education. The more media literate, the more people have an awareness of self-development and their region development. Therefore, in the future, there will be no more remote areas because the media network has reached all areas.

Media Agenda-Setting and Personal Influences in the Promotion of National Issues.

DTIC Science & Technology

1983-01-01

thesis. Also, I am thankful to Mrs. Barbara McCook who helped with the con- tent analysis. Further thanks are due to my wonderful parents . I am grateful to...judging the basic slant of the news forming media agendas. Also, rela- tionships between media and public agendas will be most ap- parent with...slant * for each story was able to be interpreted (Appendix A). At the conclusion of a coder training session, a pretest invol - ving 28 editions of the

Expectations of Students about Astronomy in High School

NASA Astrophysics Data System (ADS)

Peixoto, Denis Eduardo; Kleinke, Maurício Urban

2016-12-01

Current literature reports that the astronomy education is motivating and interesting for basic education, but the content suggested by the national curriculum guidelines do not seem to attract students and teachers in order to transcend the discipline of Science in the elementary School or Physics in High School. By applying a questionnaire to 80 students of High School and participants of Brazilian Olympiad of Astronomy and Astronautics of two schools of São Paulo state, we obtained results that indicate that astronomy topics that really motivate students are topics linked to science fiction and current research, which are the subject of extensive media release and have a strong interdisciplinary character. At the end of the work we suggest a new context for astronomy education, by inserting topics combined with other areas of knowledge to what we call “interdisciplinary astrophysics teaching”.

Effects of medium concentration on antibody production

NASA Technical Reports Server (NTRS)

Williams, J.

1984-01-01

Antibody production by two different cell lines was measured as the media were supplemented with varied amounts of glucose and fetal bovine serum. Both cell lines elaborated antidinitrophenyl hapten antibodies. Two basic media were used: RPMI 1640 and Dulbecco's modified Eagle's medium. The production of antibodies was followed from 0 to 180 h and was assayed by radioimmunoassay.

Goals and Basic Units of Instruction for Treatment Media Courses for the Preparation of Occupational Therapists.

ERIC Educational Resources Information Center

Preitz, Clarence Harold

The problem of this research was to ascertain the essential major goals for university level treatment media courses for the professional preparation of occupational therapists and to determine units of instruction to fulfill these goals. A pretested survey instrument, systematic observations, and interviews were used to collect data from the…

Air Education and Training Command > Home

Science.gov Websites

Media Guide (PDF) USAF Social Media Sites Basic Training Technical Training AF Recruiting Service Flying Air Education and Training Command Air Education and Training Command Join the Air Force Home News Our Experts Search Air Education and Training Command: Continuum of Learning AETC Strategic Plan Ask

System Models of Information, Communication and Mass Communication: Revaluation of Some Basic Concepts of Communication.

ERIC Educational Resources Information Center

Wiio, Osmo A.

A more unified approach to communication theory can evolve through systems modeling of information theory, communication modes, and mass media operations. Such systematic analysis proposes, as is the case care here, that information models be based upon combinations of energy changes and exchanges and changes in receiver systems. The mass media is…

Social Scholars: Educators' Digital Identity Construction in Open, Online Learning Environments

ERIC Educational Resources Information Center

Wise, Julie B.; O'Byrne, W. Ian

2015-01-01

The #WalkMyWorld project was an open, social media experiment developed to provide preservice and in-service teachers and K-12 students with an opportunity to focus on developing media literacies and civic engagement in online spaces. The study employed a basic interpretative qualitative study approach (Merriam, 2002) to examine how online social…

A Reference Bibliography: A Basic Collection for an Elementary School.

ERIC Educational Resources Information Center

San Diego County Office of Education, CA.

This bibliography provides a selective list of books that could be purchased for a basic reference collection in an elementary (kindergarten through grade 6) library media center. The materials are arranged both by type of reference tool and by subject area. Contents include: (1) Almanacs; (2) Dictionaries; (3) Encyclopedias; (4) Customs,…

Student Debt, Problem-Solving, and Decision-Making of Adult Learners: A Basic Qualitative Study

ERIC Educational Resources Information Center

Brooks, William J.

2013-01-01

A basic qualitative research study was conducted to develop insights into how adult learners employ problem-solving and decision-making (PSDM), when considering college financing, student loans, and student debt. Using the social media Website Facebook, eight qualified participants were recruited. Participants were interviewed via telephone, and…

A Community Television Production Experience.

ERIC Educational Resources Information Center

Colorado State Univ., Ft. Collins. Dept. of Technical Journalism.

The major goal of the Basic Video Production Workshop program of the Denver Community Video Center was to communicate basic production skills, through the use of extensive hands-on experience, to people with little or no training in the use of visual media. The ideas and exercises presented in this manual focus on the design and completion of…

Kansas Vocational Agriculture Education. Basic Core Curriculum Project, Horticulture II.

ERIC Educational Resources Information Center

Albracht, James, Ed.

This second horticulture guide is one of a set of three designated as the basic core of instruction for horticulture programs in Kansas. Units of instruction are presented in eight sections: (1) Leadership, (2) Supervised Occupational Experience, (3) Plant Propagation, (4) Soil and Plant Growth Media, (5) Fertilizers, (6) Greenhouse, (7) Plant…

Basic Research Needs for Electrical Energy Storage. Report of the Basic Energy Sciences Workshop on Electrical Energy Storage, April 2-4, 2007

DOE R&D Accomplishments Database

Goodenough, J. B.; Abruna, H. D.; Buchanan, M. V.

2007-04-04

To identify research areas in geosciences, such as behavior of multiphase fluid-solid systems on a variety of scales, chemical migration processes in geologic media, characterization of geologic systems, and modeling and simulation of geologic systems, needed for improved energy systems.

Liquid permeation and chemical stability of anodic alumina membranes

PubMed Central

Buldakov, Dmitrii A; Tishkin, Alexey A; Lukashin, Alexey V; Eliseev, Andrei A

2017-01-01

A study on the chemical stability of anodic alumina membranes and their performance in long-term water and organic solvent permeation experiments is reported. Anodic alumina possesses high stability for both protonic and aprotonic organic solvents. However, serious degradation of the membrane occurs in pure water, leading to a drastic decrease of permeance (over 20% of the initial value after the passing of 0.250 m3/m2 of pure water). The drying of the membrane induces further permeance drop-off. The rate of membrane degradation strongly depends on the pH of the penetrant solution and increases in basic media. According to 27Al NMR and thermogravimetry results, the degradation of the membranes is associated with the dissolution of water-soluble [Al13O4(OH)24(H2O)12]7+ polyhydroxocomplexes and their further redeposition in the form of [Al(OH)4]−, resulting in channels blocking. This process intensifies in basic pH due to the high positive charge of the anodic alumina surface. An approach for improving anodic aluminum oxide stability towards dissolution in water by carbon CVD coating of the membrane walls is suggested. PMID:28382245

Data for the synthesis of resorcinol-formaldehyde aerogels in acidic and basic media.

PubMed

Molina-Campos, Daniel F; Fonseca-Correa, Rafael A; Vargas-Delgadillo, Diana P; Giraldo, Liliana; Moreno-Piraján, Juan Carlos

2017-06-01

The aim of this research is to synthesise carbon aerogels and to compare the differences in their textural, morphological and chemical properties when synthesised in basic and acidic media, and with two different types of pretreatment carbonization and activation with CO 2 . Four samples are prepared and characterised using TGA-DTA, SEM, DRX, isotherm determination of N 2 adsorption-desorption at -196 °C and immersion calorimetry. The data for pore distribution are reported using non-local density functional theory and quenched solid density functional theory. Finally, with the immersion calorimetry data, the consistency between the results using this technique and those obtained using the nitrogen isotherms is analysed.

Mechanism of oxygen electroreduction on gold surfaces in basic media.

PubMed

Kim, Jongwon; Gewirth, Andrew A

2006-02-16

The mechanism of the electroreduction of oxygen on Au surfaces in basic media is examined using surface-enhanced Raman scattering (SERS) measurements and density functional theory (DFT) calculations. The spectroscopy reveals superoxide species as a reduction intermediate throughout the oxygen electroreduction, while no peroxide is detected. The spectroscopy also shows the presence of superoxide after the addition of hydrogen peroxide. The calculations show no effect of OH addition to the Au(100) surface with regard to O-O length. These results suggest that the four-electron reduction of O(2) on Au(100) in base arises from a disproportionation mechanism which is enhanced on Au(100) relative to the other two low Miller index faces of Au.

Composite of coated magnetic alloy particle

DOEpatents

Moorhead, Arthur J.; Kim, Hyoun-Ee

2000-01-01

A composite structure and method for manufacturing same, the composite structure being comprised of metal particles and an inorganic bonding media. The method comprises the steps of coating particles of a metal powder with a thin layer of an inorganic bonding media selected from the group of powders consisting of a ceramic, glass, and glass-ceramic. The particles are assembled in a cavity and heat, with or without the addition of pressure, is thereafter applied to the particles until the layer of inorganic bonding media forms a strong bond with the particles and with the layer of inorganic bonding media on adjacent particles. The resulting composite structure is strong and remains cohesive at high temperatures.

Composite of ceramic-coated magnetic alloy particles

DOEpatents

Moorhead, Arthur J.; Kim, Hyoun-Ee

2000-01-01

A composite structure and method for manufacturing same, the composite structure being comprised of metal particles and an inorganic bonding media. The method comprises the steps of coating particles of a metal powder with a thin layer of an inorganic bonding media selected from the group of powders consisting of a ceramic, glass, and glass-ceramic. The particles are assembled in a cavity and heat, with or without the addition of pressure, is thereafter applied to the particles until the layer of inorganic bonding media forms a strong bond with the particles and with the layer of inorganic bonding media on adjacent particles. The resulting composite structure is strong and remains cohesive at high temperatures.

A fractal model of effective stress of porous media and the analysis of influence factors

NASA Astrophysics Data System (ADS)

Li, Wei; Zhao, Huan; Li, Siqi; Sun, Wenfeng; Wang, Lei; Li, Bing

2018-03-01

The basic concept of effective stress describes the characteristics of fluid and solid interaction in porous media. In this paper, based on the theory of fractal geometry, a fractal model was built to analyze the relationship between the microstructure and the effective stress of porous media. From the microscopic point of view, the influence of effective stress on pore structure of porous media was demonstrated. Theoretical analysis and experimental results show that: (i) the fractal model of effective stress can be used to describe the relationship between effective stress and the microstructure of porous media; (ii) a linear increase in the effective stress leads to exponential increases in fractal dimension, porosity and pore number of the porous media, and causes a decreasing trend in the average pore radius.

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Use of Social Media in Radiology Education.

PubMed

Ranginwala, Saad; Towbin, Alexander J

2018-01-01

Social media has become the dominant method of mass digital communication over the past decade. Public figures and corporations have learned how to use this new approach to deliver their messages directly to their followers. Recently, medical educators have begun to use social media as a means to deliver educational content directly to learners. The purpose of this article is to describe the benefits of using social media for medical education. Because each social media platform has different platform-specific constraints, several different popular social media networks are discussed. For each network, the authors discuss the basics of the platform and its benefits and disadvantages for users and provide examples of how they have used each platform to target a unique audience. Copyright © 2017 American College of Radiology. Published by Elsevier Inc. All rights reserved.

Misrepresentation of neuroscience data might give rise to misleading conclusions in the media: the case of attention deficit hyperactivity disorder.

PubMed

Gonon, Francois; Bezard, Erwan; Boraud, Thomas

2011-01-31

There is often a huge gap between neurobiological facts and firm conclusions stated by the media. Data misrepresentation in the conclusions and summaries of neuroscience articles might contribute to this gap. Using the case of attention deficit hyperactivity disorder (ADHD), we identified three types of misrepresentation. The first relies on prominent inconsistencies between results and claimed conclusions and was observed in two scientific reports dealing with ADHD. Only one out of the 61 media articles echoing both scientific reports adequately described the results and, thus questioned the claimed conclusion. The second type of misrepresentation consists in putting a firm conclusion in the summary while raw data that strongly limit the claim are only given in the results section. To quantify this misrepresentation we analyzed the summaries of all articles asserting that polymorphisms of the gene coding for the D4 dopaminergic receptor are associated with ADHD. Only 25 summaries out of 159 also mentioned that this association confers a small risk. This misrepresentation is also observed in most media articles reporting on ADHD and the D4 gene. The third misrepresentation consists in extrapolating basic and pre-clinical findings to new therapeutic prospects in inappropriate ways. Indeed, analysis of all ADHD-related studies in mice showed that 23% of the conclusions were overstated. The frequency of this overstatement was positively related with the impact factor of the journal. Data misrepresentations are frequent in the scientific literature dealing with ADHD and may contribute to the appearance of misleading conclusions in the media. In synergy with citation distortions and publication biases they influence social representations and bias the scientific evidence in favor of the view that ADHD is primarily caused by biological factors. We discuss the social consequences and the causes of data misrepresentations and suggest a few corrective actions.

Rejected by Peers--Attracted to Antisocial Media Content: Rejection-Based Anger Impairs Moral Judgment among Adolescents

ERIC Educational Resources Information Center

Plaisier, Xanthe S.; Konijn, Elly A.

2013-01-01

Adolescence is an important developmental stage during which both peers and the media have a strong influence. Both peer rejection and the use of morally adverse media are associated with negative developmental outcomes. This study examines processes by which peer rejection might drive adolescents to select antisocial media content by tying…

New Media Publishing.

ERIC Educational Resources Information Center

Ritchie, Ian

The media industry is the fastest growing business in the world today; additional leisure time, coupled with increasingly global distribution, has created large international markets for information and entertainment. The United Kingdom is relatively strong in the three main areas concerned with new media publishing: information technology,…

Conveying Cutting-Edge Discoveries to Nonscientists: Effective Communication with Media

NASA Astrophysics Data System (ADS)

Gupta, Nikhil; Hamilton, Kathleen; Chamot, Joshua

2013-07-01

The benefits of using information and news media for disseminating cutting-edge scientific discoveries to the public are well known. Taxpayers and lawmakers need to be informed about the implications of public investments, young students' interest can be molded toward science- and technology-based careers, and public awareness of important issues can be raised by effectively using media. However, communication with news media is different from the means commonly used by scientists—journal publications and conference presentations. This article is intended to provide information on three basic aspects of media interactions—why, what, and how to communicate. The increasing importance of this mode of dissemination in this information age cannot be ignored; rather, it can be effectively utilized for educating a wider population base.

Educational Uses of Transmedia Storytelling: "The Ancestral Letter"

ERIC Educational Resources Information Center

Rodriguez-Illera, Jose Luis; Castells, Nuria Molas

2014-01-01

The idea that different media can work in conjunction to transmit a story, understood as a distributed narrative, is a new one and has partly been developed as a result of the technological evolution of media. On a basic level, it has been applied in education in a similar way for a long time. However, transmedia storytelling based on digital…

Analysis and Approach to the Development of an Advanced Multimedia Instructional System. Volume II. Appendix III. Media Cost Data. Final Report.

ERIC Educational Resources Information Center

Rhode, William E.; And Others

Basic cost estimates for selected instructional media are tabled in this document, Part II (Appendix III) of the report "Analysis and Approach to the Development of an Advanced Multimedia Instructional System" by William E. Rhode and others. Learning materials production costs are given for motion pictures, still visuals, videotapes, live…

Phytotechnology Technical and Regulatory Guidance Document

DTIC Science & Technology

2001-04-01

contaminated media is rather new. Throughout the development process of this document, we referred to the science as “ phytoremediation .” Recently...the media containing contaminants, we now refer to “phytotechnologies” as the overarching terminology, while using “ phytoremediation ” more...publication of the ITRC document, Phytoremediation Decision Tree. The decision tree was designed to allow potential users to take basic information

Research on Visualization Design Method in the Field of New Media Software Engineering

NASA Astrophysics Data System (ADS)

Deqiang, Hu

2018-03-01

In the new period of increasingly developed science and technology, with the increasingly fierce competition in the market and the increasing demand of the masses, new design and application methods have emerged in the field of new media software engineering, that is, the visualization design method. Applying the visualization design method to the field of new media software engineering can not only improve the actual operation efficiency of new media software engineering but more importantly the quality of software development can be enhanced by means of certain media of communication and transformation; on this basis, the progress and development of new media software engineering in China are also continuously promoted. Therefore, the application of visualization design method in the field of new media software engineering is analysed concretely in this article from the perspective of the overview of visualization design methods and on the basis of systematic analysis of the basic technology.

Polarization recovery through scattering media.

PubMed

de Aguiar, Hilton B; Gigan, Sylvain; Brasselet, Sophie

2017-09-01

The control and use of light polarization in optical sciences and engineering are widespread. Despite remarkable developments in polarization-resolved imaging for life sciences, their transposition to strongly scattering media is currently not possible, because of the inherent depolarization effects arising from multiple scattering. We show an unprecedented phenomenon that opens new possibilities for polarization-resolved microscopy in strongly scattering media: polarization recovery via broadband wavefront shaping. We demonstrate focusing and recovery of the original injected polarization state without using any polarizing optics at the detection. To enable molecular-level structural imaging, an arbitrary rotation of the input polarization does not degrade the quality of the focus. We further exploit the robustness of polarization recovery for structural imaging of biological tissues through scattering media. We retrieve molecular-level organization information of collagen fibers by polarization-resolved second harmonic generation, a topic of wide interest for diagnosis in biomedical optics. Ultimately, the observation of this new phenomenon paves the way for extending current polarization-based methods to strongly scattering environments.

Magnetic hyperbolic optical metamaterials

DOE PAGES

Kruk, Sergey S.; Wong, Zi Jing; Pshenay-Severin, Ekaterina; ...

2016-04-13

Strongly anisotropic media where the principal components of electric permittivity or magnetic permeability tensors have opposite signs are termed as hyperbolic media. Such media support propagating electromagnetic waves with extremely large wave vectors exhibiting unique optical properties. However, in all artificial and natural optical materials studied to date, the hyperbolic dispersion originates solely from the electric response. This then restricts material functionality to one polarization of light and inhibits free-space impedance matching. Such restrictions can be overcome in media having components of opposite signs for both electric and magnetic tensors. Here we present the experimental demonstration of the magnetic hyperbolicmore » dispersion in three-dimensional metamaterials. We also measure metamaterial isofrequency contours and reveal the topological phase transition between the elliptic and hyperbolic dispersion. In the hyperbolic regime, we demonstrate the strong enhancement of thermal emission, which becomes directional, coherent and polarized. These findings show the possibilities for realizing efficient impedance-matched hyperbolic media for unpolarized light.« less

Improving titer while maintaining quality of final formulated drug substance via optimization of CHO cell culture conditions in low-iron chemically defined media.

PubMed

Xu, Jianlin; Rehmann, Matthew S; Xu, Xuankuo; Huang, Chao; Tian, Jun; Qian, Nan-Xin; Li, Zheng Jian

2018-04-01

During biopharmaceutical process development, it is important to improve titer to reduce drug manufacturing costs and to deliver comparable quality attributes of therapeutic proteins, which helps to ensure patient safety and efficacy. We previously reported that relative high-iron concentrations in media increased titer, but caused unacceptable coloration of a fusion protein during early-phase process development. Ultimately, the fusion protein with acceptable color was manufactured using low-iron media, but the titer decreased significantly in the low-iron process. Here, long-term passaging in low-iron media is shown to significantly improve titer while maintaining acceptable coloration during late-phase process development. However, the long-term passaging also caused a change in the protein charge variant profile by significantly increasing basic variants. Thus, we systematically studied the effect of media components, seed culture conditions, and downstream processing on productivity and quality attributes. We found that removing β-glycerol phosphate (BGP) from basal media reduced basic variants without affecting titer. Our goals for late-phase process development, improving titer and matching quality attributes to the early-phase process, were thus achieved by prolonging seed culture age and removing BGP. This process was also successfully scaled up in 500-L bioreactors. In addition, we demonstrated that higher concentrations of reactive oxygen species were present in the high-iron Chinese hamster ovary cell cultures compared to that in the low-iron cultures, suggesting a possible mechanism for the drug substance coloration caused by high-iron media. Finally, hypotheses for the mechanisms of titer improvement by both high-iron and long-term culture are discussed.

Review on subsurface colloids and colloid-associated contaminant transport in saturated porous media.

PubMed

Kanti Sen, Tushar; Khilar, Kartic C

2006-02-28

In this review article, the authors present up-to-date developments on experimental, modeling and field studies on the role of subsurface colloidal fines on contaminant transport in saturated porous media. It is a complex phenomenon in porous media involving several basic processes such as colloidal fines release, dispersion stabilization, migration and fines entrapment/plugging at the pore constrictions and adsorption at solid/liquid interface. The effects of these basic processes on the contaminant transport have been compiled. Here the authors first present the compilation on in situ colloidal fines sources, release, stabilization of colloidal dispersion and migration which are a function of physical and chemical conditions of subsurface environment and finally their role in inorganic and organic contaminants transport in porous media. The important aspects of this article are as follows: (i) it gives not only complete compilation on colloidal fines-facilitated contaminant transport but also reviews the new role of colloidal fines in contaminant retardation due to plugging of pore constrictions. This plugging phenomenon also depends on various factors such as concentration of colloidal fines, superficial velocity and bead-to-particle size ratio. This plugging-based contaminant transport can be used to develop containment technique in soil and groundwater remediation. (ii) It also presents the importance of critical salt concentration (CSC), critical ionic strength for mixed salt, critical shear stressor critical particle concentration (CPC) on in situ colloidal fines release and migration and consequently their role on contaminant transport in porous media. (iii) It also reviews another class of colloidal fines called biocolloids and their transport in porous media. Finally, the authors highlight the future research based on their critical review on colloid-associated contaminant transport in saturated porous media.

Strong activation of bile acid-sensitive ion channel (BASIC) by ursodeoxycholic acid

PubMed Central

Wiemuth, Dominik; Sahin, Hacer; Lefèvre, Cathérine M.T.; Wasmuth, Hermann E.; Gründer, Stefan

2013-01-01

Bile acid-sensitive ion channel (BASIC) is a member of the DEG/ENaC gene family of unknown function. Rat BASIC (rBASIC) is inactive at rest. We have recently shown that cholangiocytes, the epithelial cells lining the bile ducts, are the main site of BASIC expression in the liver and identified bile acids, in particular hyo- and chenodeoxycholic acid, as agonists of rBASIC. Moreover, it seems that extracellular divalent cations stabilize the resting state of rBASIC, because removal of extracellular divalent cations opens the channel. In this addendum, we demonstrate that removal of extracellular divalent cations potentiates the activation of rBASIC by bile acids, suggesting an allosteric mechanism. Furthermore, we show that rBASIC is strongly activated by the anticholestatic bile acid ursodeoxycholic acid (UDCA), suggesting that BASIC might mediate part of the therapeutic effects of UDCA. PMID:23064163

Red flags on pinkwashed drinks: contradictions and dangers in marketing alcohol to prevent cancer.

PubMed

Mart, Sarah; Giesbrecht, Norman

2015-10-01

To document alcohol products and promotions that use the pink ribbon symbol and related marketing materials that associate alcohol brands with breast cancer charities, awareness and survivors. We conducted a basic Boolean public internet search for alcohol products with pink ribbon/breast cancer awareness marketing campaigns. There is strong and growing evidence of alcohol as a contributing cause of several types of cancer, including breast cancer. There is no U-shaped curve for cancer, and threshold of elevated relative risk is as low as one drink a day for certain cancers. We found 17 examples of alcohol product campaigns with websites, press releases and social media posts, along with news articles and blog posts from industry and non-profit organizations regarding alcohol products associated with breast cancer causes and charities. Various cancer charities have entered into alliances with sectors of the alcohol industry that raise funds for breast cancer research, treatment or prevention by promoting the purchase of certain alcoholic beverages. Some alcohol corporations use pink ribbons and other breast cancer-related images, messages and user-generated media to market a product that contributes to cancer disease and death. Therefore, cancer charities should adopt policies to separate them from alliances with the alcohol industry. © 2015 Society for the Study of Addiction.

Social Features of Online Networks: The Strength of Intermediary Ties in Online Social Media

PubMed Central

Grabowicz, Przemyslaw A.; Ramasco, José J.; Moro, Esteban; Pujol, Josep M.; Eguiluz, Victor M.

2012-01-01

An increasing fraction of today's social interactions occur using online social media as communication channels. Recent worldwide events, such as social movements in Spain or revolts in the Middle East, highlight their capacity to boost people's coordination. Online networks display in general a rich internal structure where users can choose among different types and intensity of interactions. Despite this, there are still open questions regarding the social value of online interactions. For example, the existence of users with millions of online friends sheds doubts on the relevance of these relations. In this work, we focus on Twitter, one of the most popular online social networks, and find that the network formed by the basic type of connections is organized in groups. The activity of the users conforms to the landscape determined by such groups. Furthermore, Twitter's distinction between different types of interactions allows us to establish a parallelism between online and offline social networks: personal interactions are more likely to occur on internal links to the groups (the weakness of strong ties); events transmitting new information go preferentially through links connecting different groups (the strength of weak ties) or even more through links connecting to users belonging to several groups that act as brokers (the strength of intermediary ties). PMID:22247773

Telecommunications media for the delivery of educational programming

NASA Technical Reports Server (NTRS)

Ballard, R.; Eastwood, L. F., Jr.

1974-01-01

The technical characteristics of various telecommunications media are examined for incorporation into educational networks. FM radio, AM radio, and VHF and UHF television are considered along with computer-aided instruction. The application of iteration networks to library systems, and microform technology are discussed. The basic principles of the communications theory are outlined, and the operation of the PLATO 4 random access system is described.

Learning Achievement Improvement Efforts Course Learn and Learning Using the Jigsaw Method and Card Media in STKIP PGRI Ngawi 2014/2015 Academic Year

ERIC Educational Resources Information Center

Haryono

2015-01-01

Subject Teaching and Learning is a basic educational courses that must be taken by all student teachers. Class Action Research aims to improve student achievement Teaching and Learning course by applying Jigsaw and media cards. Research procedures using Classroom Action Research (CAR) with multiple cycles. Each cycle includes four phases:…

Dynamic analysis of reactive oxygen nitrogen species in plasma-activated culture medium by UV absorption spectroscopy

NASA Astrophysics Data System (ADS)

Brubaker, Timothy R.; Ishikawa, Kenji; Takeda, Keigo; Oh, Jun-Seok; Kondo, Hiroki; Hashizume, Hiroshi; Tanaka, Hiromasa; Knecht, Sean D.; Bilén, Sven G.; Hori, Masaru

2017-12-01

The liquid-phase chemical kinetics of a cell culture basal medium during treatment by an argon-fed, non-equilibrium atmospheric-pressure plasma source were investigated using real-time ultraviolet absorption spectroscopy and colorimetric assays. Depth- and time-resolved NO2- and NO3- concentrations were strongly inhomogeneous and primarily driven by convection during and after plasma-liquid interactions. H2O2 concentrations determined from deconvolved optical depth spectra were found to compensate for the optical depth spectra of excluded reactive species and changes in dissolved gas content. Plasma-activated media remained weakly basic due to NaHCO3 buffering, preventing the H+-catalyzed decomposition of NO2- seen in acidic plasma-activated water. An initial increase in pH may indicate CO2 sparging. Furthermore, the pH-dependency of UV optical depth spectra illustrated the need for pH compensation in the fitting of optical depth data.

Facts about Folic Acid

MedlinePlus

... Surveillance References Birth Defects COUNT Data & Statistics Research Articles & Key Findings About Us Partners Links to Other Websites Information For… Media Policy Makers Folic Acid Basics Language: English (US) ...

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Student Difficulties Measuring Distances in Terms of Wavelength: Lack of Basic Skills or Failure to Transfer?

ERIC Educational Resources Information Center

Kryjevskaia, Mila; Stetzer, MacKenzie R.; Heron, Paula R. L.

2013-01-01

In a previous paper that focused on the transmission of periodic waves at the boundary between two media, we documented difficulties with the basic concepts of wavelength, frequency, and propagation speed, and with the relationship v=f[lambda]. In this paper, we report on student attempts to apply this relationship in problems involving two-source…

Adsorption, Mobility and Organisation of Organic Molecules at Clay Surfaces Probed by Photophysics and Photochemistry

DTIC Science & Technology

1989-06-15

and refluxed at 100 0 C during 24 hours. This basic hydrolysis results in the formation of polymethacrylic acid , which is soluble in basic media. The...from the supernatant solution by adding 3M HC The I.R.spectrum of the obtained polymer is identical to the I.R. spectrum of the polymethacrylic acid (8

Task Characteristics, Managerial Socialization, and Media Selection.

ERIC Educational Resources Information Center

Donabedian, Bairj; McKinnon, Sharon M.; Bruns, William J., Jr.

1998-01-01

Questions why managers choose one communication medium in preference to another. Proposes a role for social factors in media selection. Finds, employing a large field-collected sample, strong support for Information Richness Theory, a rational-choice model connecting managers' media choice to task characteristics like variety and analyzability.…

Representations of Autism in Australian Print Media

ERIC Educational Resources Information Center

Jones, Sandra C.; Harwood, Valerie

2009-01-01

The mass media provides a frame for discourse around important health issues, and it has been widely demonstrated that the development and reinforcement of stereotypes of minority groups are strongly influenced by the news and entertainment media. An extensive search of academic databases failed to locate any studies which examined the…

Weak bases and formation of a less soluble lauryl sulfate salt/complex in sodium lauryl sulfate (SLS) containing media.

PubMed

Bhattachar, Shobha N; Risley, Donald S; Werawatganone, Pornpen; Aburub, Aktham

2011-06-30

This work reports on the solubility of two weakly basic model compounds in media containing sodium lauryl sulfate (SLS). Results clearly show that the presence of SLS in the media (e.g. simulated gastric fluid or dissolution media) can result in an underestimation of solubility of some weak bases. We systematically study this phenomenon and provide evidence (chromatography and pXRD) for the first time that the decrease in solubility is likely due to formation of a less soluble salt/complex between the protonated form of the weak base and lauryl sulfate anion. Copyright © 2011 Elsevier B.V. All rights reserved.

Youth Screen Media Habits and Sleep: Sleep-Friendly Screen Behavior Recommendations for Clinicians, Educators, and Parents.

PubMed

Hale, Lauren; Kirschen, Gregory W; LeBourgeois, Monique K; Gradisar, Michael; Garrison, Michelle M; Montgomery-Downs, Hawley; Kirschen, Howard; McHale, Susan M; Chang, Anne-Marie; Buxton, Orfeu M

2018-04-01

With the widespread use of portable electronic devices and the normalization of screen media devices in the bedroom, insufficient sleep has become commonplace. In a recent literature review, 90% of included studies found an association between screen media use and delayed bedtime and/or decreased total sleep time. This pervasive phenomenon of pediatric sleep loss has widespread implications. There is a need for basic, translational, and clinical research examining the effects of screen media on sleep loss and health consequences in children and adolescents to educate and motivate clinicians, teachers, parents and youth themselves to foster healthy sleep habits. Copyright © 2017 Elsevier Inc. All rights reserved.

Digital Media for Primary Health Care in Austria.

PubMed

Kriegel, Johannes; Tuttle-Weidinger, Linda; Reckwitz, Luise

2017-01-01

Primary health care (PHC) is currently being improved in all developed industries. The aim is to make healthcare more patient-centered and close to the patient's place of residence. In addition to the organizational and interdisciplinary reorientation, the use of digital media is increasingly being emphasized. Through literature research and an online survey among Austrian doctors and general practitioners, the current and future challenges for the use of digital media in networked and regional primary health care were identified and prioritized. It becomes clear that basic functions like documentation, communication and coordination in the individual medical practice are at the forefront. In the future it will be necessary to support regional and interprofessional networking through digital media.

Numerical Methods for Forward and Inverse Problems in Discontinuous Media

DOE Office of Scientific and Technical Information (OSTI.GOV)

Chartier, Timothy P.

The research emphasis under this grant's funding is in the area of algebraic multigrid methods. The research has two main branches: 1) exploring interdisciplinary applications in which algebraic multigrid can make an impact and 2) extending the scope of algebraic multigrid methods with algorithmic improvements that are based in strong analysis.The work in interdisciplinary applications falls primarily in the field of biomedical imaging. Work under this grant demonstrated the effectiveness and robustness of multigrid for solving linear systems that result from highly heterogeneous finite element method models of the human head. The results in this work also give promise tomore » medical advances possible with software that may be developed. Research to extend the scope of algebraic multigrid has been focused in several areas. In collaboration with researchers at the University of Colorado, Lawrence Livermore National Laboratory, and Los Alamos National Laboratory, the PI developed an adaptive multigrid with subcycling via complementary grids. This method has very cheap computing costs per iterate and is showing promise as a preconditioner for conjugate gradient. Recent work with Los Alamos National Laboratory concentrates on developing algorithms that take advantage of the recent advances in adaptive multigrid research. The results of the various efforts in this research could ultimately have direct use and impact to researchers for a wide variety of applications, including, astrophysics, neuroscience, contaminant transport in porous media, bi-domain heart modeling, modeling of tumor growth, and flow in heterogeneous porous media. This work has already led to basic advances in computational mathematics and numerical linear algebra and will continue to do so into the future.« less

Propagation of hypergeometric Gaussian beams in strongly nonlocal nonlinear media

NASA Astrophysics Data System (ADS)

Tang, Bin; Bian, Lirong; Zhou, Xin; Chen, Kai

2018-01-01

Optical vortex beams have attracted lots of interest due to its potential application in image processing, optical trapping and optical communications, etc. In this work, we theoretically and numerically investigated the propagation properties of hypergeometric Gaussian (HyGG) beams in strongly nonlocal nonlinear media. Based on the Snyder-Mitchell model, analytical expressions for propagation of the HyGG beams in strongly nonlocal nonlinear media were obtained. The influence of input power and optical parameters on the evolutions of the beam width and radius of curvature is illustrated, respectively. The results show that the beam width and radius of curvature of the HyGG beams remain invariant, like a soliton when the input power is equal to the critical power. Otherwise, it varies periodically like a breather, which is the result of competition between the beam diffraction and nonlinearity of the medium.

The interaction of financial news between mass media and new media: Evidence from news on Chinese stock market

NASA Astrophysics Data System (ADS)

Zhang, Yongjie; Zhang, Zuochao; Liu, Lanbiao; Shen, Dehua

2017-11-01

In this paper, we investigate both the contemporaneous and the lead-lag relationships between the mass media news and the new media news of the financial news on the constitute stocks of the CSI 300. The empirical results show that: (1) there exists a strong correlation between these two types of news; (2) the granger causality direction from new media news to mass media news is increasingly obvious, while the reverse direction has a downward trend; (3) new media is playing a increasingly important role in the stock market and exhibits a trend to substitutes the mass media.

Acousto-optic control of internal acoustic reflection in tellurium dioxide crystal in case of strong elastic energy walkoff [Invited].

PubMed

Voloshinov, Vitaly; Polikarpova, Nataliya; Ivanova, Polina; Khorkin, Vladimir

2018-04-01

Peculiar cases of acoustic wave propagation and reflection may be observed in strongly anisotropic acousto-optical crystals. A tellurium dioxide crystal serves as a prime example of such media, since it possesses record indexes of acoustic anisotropy. We studied one of the unusual scenarios of acoustic incidence and reflection from a free crystal-vacuum boundary in paratellurite. The directions of the acoustic waves in the (001) plane of the crystal were determined, and their basic characteristics were calculated. The carried-out acousto-optic experiment at the wavelength of light 532 nm and the acoustic frequency 73 MHz confirmed the theoretical predictions. The effects examined in the paper include the acoustic wave propagation with the record walkoff angle 74°. We also observed the incidence of the wave on the boundary at the angle exceeding 90°. Finally, we registered the close-to-back reflection of acoustic energy following the incidence. One of the stunning aspects is the distribution of energy between the incident and the back-reflected wave. The unusual features of the acoustic wave reflections pointed out in the paper are valuable for their possible applications in acousto-optic devices.

pH-Mediated Fluorescent Polymer Particles and Gel from Hyperbranched Polyethylenimine and the Mechanism of Intrinsic Fluorescence.

PubMed

Liu, Shi Gang; Li, Na; Ling, Yu; Kang, Bei Hua; Geng, Shuo; Li, Nian Bing; Luo, Hong Qun

2016-02-23

We report that fluorescence properties and morphology of hyperbranched polyethylenimine (hPEI) cross-linked with formaldehyde are highly dependent on the pH values of the cross-linking reaction. Under acidic and neutral conditions, water-soluble fluorescent copolymer particles (CPs) were produced. However, under basic conditions, white gels with weak fluorescence emission would be obtained. The water-soluble hPEI-formaldehyde (hPEI-F) CPs show strong intrinsic fluorescence without the conjugation to any classical fluorescent agents. By the combination of spectroscopy and microscopy techniques, the mechanism of fluorescence emission was discussed. We propose that the intrinsic fluorescence originates from the formation of a Schiff base in the cross-linking process between hPEI and formaldehyde. Schiff base bonds are the fluorescence-emitting moieties, and the compact structure of hPEI-F CPs plays an important role in their strong fluorescence emission. The exploration on fluorescence mechanism may provide a new strategy to prepare fluorescent polymer particles. In addition, the investigation shows that the hPEI-F CPs hold potential as a fluorescent probe for the detection of copper ions in aqueous media.

Social Media and Peer-Reviewed Medical Journal Readership: A Randomized Prospective Controlled Trial.

PubMed

Hawkins, C Matthew; Hunter, Makeba; Kolenic, Giselle E; Carlos, Ruth C

2017-05-01

To prospectively evaluate the impact of increasing levels of social media engagement on page visits and web-link clicks for content published in the Journal of the American College of Radiology. A three-arm prospective trial was designed using a control group, a basic Twitter intervention group (using only the Journal's @JACRJournal Twitter account), and an enhanced Twitter intervention group (using the personal Twitter accounts of editorial board members and trainees). Overall, 428 articles published between June 2013 and July 2015 were randomly assigned to the three groups. Article-specific tweets for both intervention arms were sent between September 14, 2015, and October 28, 2015. Primary end points included article-specific weekly and monthly page visits on the journal's Elsevier website (Amsterdam, Netherlands). For the two intervention groups, additional end points included 7-day and 30-day Twitter link clicks. Weekly page visits for the enhanced Twitter arm (mean 18.2; 95% confidence interval [CI] 15.6-20.7) were significantly higher when compared with the weekly page visits for the control arm (mean 7.6; 95% CI 1.7-13.6). However, there was no demonstrable increase in weekly page visits (mean 9.4; 95% CI 7.4-11.5) for the basic Twitter arm compared with the control arm. No intervention effects over control, regardless of Twitter arm assignment, were demonstrated for monthly page visits. The enhanced Twitter intervention resulted in a statistically significant increase in both 7-day and 30-day Twitter link clicks compared with the basic Twitter intervention group. An organized social media strategy, with focused social media activity from editorial board members, increased engagement with content published in a peer-reviewed radiology journal. Copyright © 2016 American College of Radiology. Published by Elsevier Inc. All rights reserved.

Media saturation, communication exposure and HIV stigma in Nigeria.

PubMed

Babalola, Stella; Fatusi, Adesegun; Anyanti, Jennifer

2009-04-01

HIV-related stigma constitutes an impediment to public health as it hampers HIV/AIDS control efforts in many ways. To address the complex problems of increasing HIV infection rate, widespread misinformation about the infection and the rising level of HIV-related stigma, the various tiers of government in Nigeria are working with local and international non-governmental organizations to develop and implement strategic communication programs. This paper assesses the link between these communication efforts and HIV-related stigma using data from a nationally representative household survey. The results show that accepting attitudes towards people living with HIV are more prevalent among men than among women. Exposure to HIV-related communication on the media is associated with increased knowledge about HIV, which is in turn a strong predictor of accepting attitudes. Communication exposure also has a significant and positive association with accepting attitudes towards people living with HIV. In contrast, community media saturation is not strongly linked with accepting attitudes for either sex. The findings strongly suggest that media-based HIV programs constitute an effective strategy to combat HIV/AIDS-related stigma and should therefore be intensified in Nigeria.

Public School Library Media Centers in South Carolina: A Survey of Service Levels Offered. Conducted during School Year 1988/1989.

ERIC Educational Resources Information Center

Townsend, Catherine M.

A state-wide survey was undertaken in 1988-1989 to determine the status of the library media programs in South Carolina's public schools. The first of two phases of the study involved the compilation of statistical data reported to the State Department of Education by building level administrators on the Basic Educational Data System (BEDS) for…

Conditioned media from a renal cell carcinoma cell line demonstrates the presence of basic fibroblast growth factor.

PubMed

Mydlo, J H; Zajac, J; Macchia, R J

1993-09-01

In a previous report, we demonstrated the isolation and purification of a heparin binding growth factor from human renal carcinoma, and suggested that this growth factor may play a role in the neovascularity and growth of the tumor. In this report, we demonstrate that the growth of the renal cell carcinoma cell line RC29 is stimulated by the addition of exogenous fibroblast growth factor (FGF), epidermal growth factor (EGF) and transforming growth factor alpha (TGF alpha). Also, media conditioned by this cell line was able to stimulate growth of the A431 vulvar tumor cell line, known for its high concentration of EGF receptors, 3T3 fibroblasts, human umbilical vein (HUV) cells and RC29 cells. Using heparin-sepharose chromatography and then SDS polyacrylamide gel electrophoresis (PAGE), we were able to demonstrate several proteins in the conditioned media of the RC29 cell line. Using Western blot analysis, we detected that at least one of the proteins expressed in this conditioned media was FGF and that it belongs to the basic, not acidic, family of fibroblast growth factors. These findings suggest that renal tumors may express growth factors that may play a direct role in maintaining their unrestricted proliferation.

Reinventing Minority Media for the 21st Century: A Report of the Aspen Institute Forum on Diversity and the Media (Aspen, Colorado, July 13-15, 2000).

ERIC Educational Resources Information Center

Rodriguez, America

This publication reports on a 2000 forum that included media business executives, financiers, academics, and other experts who examined: how minority media can leverage their historically strong community base to succeed in the new century; how they can overcome financial challenges; what measures they might adopt to keep abreast of opportunities…

Understanding and Changing Older Adults' Perceptions and Learning of Social Media

ERIC Educational Resources Information Center

Xie, Bo; Watkins, Ivan; Golbeck, Jen; Huang, Man

2012-01-01

An exploratory study was conducted to answer the following questions: What are older adults' perceptions of social media? What educational strategies can facilitate their learning of social media? A thematic map was developed to illustrate changing perceptions from the initial unanimous, strong negative to the more positive but cautious, and to…

Leadership Lessons: Helping Students Develop Essential Leadership and Communication Competencies through Social Media

ERIC Educational Resources Information Center

Remund, David L.

2015-01-01

Instructors often use social media as an extra platform for sharing information and therefore extend the classroom beyond classroom walls. However, when more thoughtfully integrated in pedagogy and tied to specific desired learning outcomes, social media may help accomplish more: strong engagement and self-reported comprehension, aided by the…

Association of Various Components of Media Literacy and Adolescent Smoking

ERIC Educational Resources Information Center

Primack, Brian A.; Hobbs, Renee

2009-01-01

Objective: To determine which specific aspects of media literacy were most strongly associated with smoking outcomes. Methods: Students at a public high school responded to cross-sectional survey items measuring smoking outcomes, components of media literacy, and other variables. Results: Of the 1211 participants, 19% were current smokers (N =…

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The Media and the Terrorist: Not Innocents, but Both Victims.

ERIC Educational Resources Information Center

Dowling, Ralph E.

Government officials, media critics, and the public at large appear to believe that the media "cause" or strongly motivate acts of terrorism. However, analysis using Kenneth Burke's dramatistic method can explain political terrorism without reference to desire for coverage. Terrorism would occur because of its symbolic value even with no…

Showcase your service: social media and marketing basics in a dynamic, over-populated, mixed-message, and highly competitive world.

PubMed

Kuechel, Marie Czenko

2010-11-01

This article discusses social media as a means of communication between the aesthetic medical practice and clients. Discussion of the various types of social media and how each can support a physician's practice, brand, market, and tolerances is presented. Blogs, wikis, networks, viral marketing, and electronic communications are presented in terms of what they can provide a practice and their limitations and pitfalls. Emphasis is on finding the combination of methods to showcase the individual style and personality of a practice. Copyright © 2010 Elsevier Inc. All rights reserved.

Facts about Congenital Heart Defects

MedlinePlus

... Living With Heart Defects Data & Statistics Tracking & Research Articles & Key Findings Free Materials Multimedia and Tools Links to Other Websites Information For… Media Policy Makers Basics about Congenital Heart Defects Language: ...

Media use, face-to-face communication, media multitasking, and social well-being among 8- to 12-year-old girls.

PubMed

Pea, Roy; Nass, Clifford; Meheula, Lyn; Rance, Marcus; Kumar, Aman; Bamford, Holden; Nass, Matthew; Simha, Aneesh; Stillerman, Benjamin; Yang, Steven; Zhou, Michael

2012-03-01

An online survey of 3,461 North American girls ages 8-12 conducted in the summer of 2010 through Discovery Girls magazine examined the relationships between social well-being and young girls' media use--including video, video games, music listening, reading/homework, e-mailing/posting on social media sites, texting/instant messaging, and talking on phones/video chatting--and face-to-face communication. This study introduced both a more granular measure of media multitasking and a new comparative measure of media use versus time spent in face-to-face communication. Regression analyses indicated that negative social well-being was positively associated with levels of uses of media that are centrally about interpersonal interaction (e.g., phone, online communication) as well as uses of media that are not (e.g., video, music, and reading). Video use was particularly strongly associated with negative social well-being indicators. Media multitasking was also associated with negative social indicators. Conversely, face-to-face communication was strongly associated with positive social well-being. Cell phone ownership and having a television or computer in one's room had little direct association with children's socioemotional well-being. We hypothesize possible causes for these relationships, call for research designs to address causality, and outline possible implications of such findings for the social well-being of younger adolescents. PsycINFO Database Record (c) 2012 APA, all rights reserved.

Enabling Science Integration through the Marine Geoscience Data System Media Bank

NASA Astrophysics Data System (ADS)

Leung, A.; Ferrini, V.; Arko, R.; Carbotte, S. M.; Goehring, L.; Simms, E.

2008-12-01

The Marine Geoscience Data System Media Bank (http://media.marine-geo.org) was constructed to enable the sharing of high quality images, illustrations and animations among members of the science community and to provide a new forum for education and public outreach (EPO). The initial focus of Media Bank was to serve Ridge 2000 research and EPO efforts, but it was constructed as a flexible system that could accommodate media from other multidisciplinary marine geoscience research initiatives. Media Bank currently contains digital photographs, maps, 3-D visualizations, and video clips from the Ridge 2000 and MARGINS focus sites as well as the Antarctic and Southern Ocean. We actively seek contributions of other high quality marine geoscience media for inclusion in Media Bank. Media Bank is driven by a relational database backend, enabling image browsing, sorting by category, keyword search functionality, and the creation of media galleries. All media are accompanied by a descriptive figure caption that provides easy access to expert knowledge to help foster data integration across disciplines as well as EPO efforts. In addition to access to high quality media, Media Bank also provides basic metadata including geographic position, investigator name and affiliation, as well as copyright information, and links to references and relevant data sets. Since media are tied to geospatial coordinates, a map-based interface is also provided for access to media.

Selected Interviews with Doug Lowy

Cancer.gov

In these selected interviews, Douglas R. Lowy, M.D., Deputy Director of the National Cancer Institute (NCI), talks with media and scientific institutions about basic science, clinical research, and the work of NCI.

Efficacy and causal mechanism of an online social media intervention to increase physical activity: Results of a randomized controlled trial.

PubMed

Zhang, Jingwen; Brackbill, Devon; Yang, Sijia; Centola, Damon

2015-01-01

To identify what features of social media - promotional messaging or peer networks - can increase physical activity. A 13-week social media-based exercise program was conducted at a large Northeastern university in Philadelphia, PA. In a randomized controlled trial, 217 graduate students from the University were randomized to three conditions: a control condition with a basic online program for enrolling in weekly exercise classes led by instructors of the University for 13 weeks, a media condition that supplemented the basic program with weekly online promotional media messages that encourage physical activity, and a social condition that replaced the media content with an online network of four to six anonymous peers composed of other participants of the program, in which each participant was able to see their peers' progress in enrolling in classes. The primary outcome was the number of enrollments in exercise classes, and the secondary outcomes were self-reported physical activities. Data were collected in 2014. Participants enrolled in 5.5 classes on average. Compared with enrollment in the control condition (mean = 4.5), promotional messages moderately increased enrollment (mean = 5.7, p = 0.08), while anonymous social networks significantly increased enrollment (mean = 6.3, p = 0.02). By the end of the program, participants in the social condition reported exercising moderately for an additional 1.6 days each week compared with the baseline, which was significantly more than an additional 0.8 days in the control condition. Social influence from anonymous online peers was more successful than promotional messages for improving physical activity. ClinicalTrials.gov: NCT02267369.

Giant Linear Nonreciprocity, Zero Reflection, and Zero Band Gap in Equilibrated Space-Time-Varying Media

NASA Astrophysics Data System (ADS)

Taravati, Sajjad

2018-06-01

This article presents a class of space-time-varying media with giant linear nonreciprocity, zero space-time local reflections, and zero photonic band gap. This is achieved via equilibrium in the electric and magnetic properties of unidirectionally space-time-modulated media. The enhanced nonreciprocity is accompanied by a larger sonic regime interval which provides extra design freedom for achieving strong nonreciprocity by a weak pumping strength. We show that the width of photonic band gaps in general periodic space-time permittivity- and permeability-modulated media is proportional to the absolute difference between the electric and magnetic pumping strengths. We derive a rigorous analytical solution for investigation of wave propagation and scattering from general periodic space-time permittivity- and permeability-modulated media. In contrast with weak photonic transitions, from the excited mode to its two adjacent modes, in conventional space-time permittivity-modulated media, in an equilibrated space-time-varying medium, strong photonic transitions occur from the excited mode to its four adjacent modes. We study the enhanced nonreciprocity and zero band gap in equilibrated space-time-modulated media by analysis of their dispersion diagrams. In contrast to conventional space-time permittivity-modulated media, equilibrated space-time media exhibit different phase and group velocities for forward and backward harmonics. Furthermore, the numerical simulation scheme of general space-time permittivity- and permeability-modulated media is presented, which is based on the finite-difference time-domain technique. Our analytical and numerical results provide insights into general space-time refractive-index-modulated media, paving the way toward optimal isolators, nonreciprocal integrated systems, and subharmonic frequency generators.

Thermometric titration of some monoprotic and diprotic acids in aqueous and non-aqueous media.

PubMed

Harries, R J

1968-12-01

Some mono- and diprotic acids have been titrated thermometrically with strong alkalis in aqueous and non-aqueous media. Thermograms with sharp arrest points were obtained, from which heats of neutralization were measured. Heats of neutralization in the media used were compared and an effect attributable to hydrogen bonding was found.

Teenagers and the Fragmenting Media Environment in Asia: An Australian Pilot Study.

ERIC Educational Resources Information Center

Sternberg, Jason; George, Christina; Green, Joshua

2000-01-01

Presents preliminary results from a survey of 15- to 17-year-old Australians, exploring television's place within a rapidly expanding multimedia environment. Finds strong evidence for arguing that Australian youth's media use is currently in a state of flux. Lays foundations for more comprehensive studies of youth media use in Australia that might…

The Terrorist and the Media: Partners in Crime or Rituals and Harmless Observers?

ERIC Educational Resources Information Center

Dowling, Ralph E.

This paper explores the idea that the media "cause" or strongly motivate acts of terrorism. In an effort to refute this view the paper applies Kenneth Burke's dramatistic theory of communication to show that the motives and behavior of political terrorists can be explained without reference to the media coverage terrorism produces. The…

Optimized Pyroelectric Vidicon Thermal Imager. Volume II. Improper Ferroelectric Crystal Growth.

DTIC Science & Technology

1980-09-01

75 4.1 Hydrothermal Synthesis of Boracite Powders..... 75 4.2 Hydrothermal Growth of Boracite Crystals ......... 77...4.2.1 Apparatus .......................... 77 4.2.2 Growth from Acidic Media .................o 78 4.2.3 Hydrothermal Growth in Basic Media ...... 99...Calculated temperature dependence of p/cc for DSP under biasing fields of 0, 2 and 5 kV/cm... 74 11 LIST OF ILLUSTRATIONS (Cont’d) Page Fig. 44: Hydrothermal

[Social-professional status, identity, social participation and media utilization. Analysis of a complex dynamics].

PubMed

Laflamme, Simon; Roggero, Pascal; Southcott, Chris

2010-08-01

This article examines the link between the domain and level of occupation, on the one hand, and use of media, including internet, on the other. It adds to this investigation an analysis of identity in its relation to media use and accessibility. It challenges the hypothesis of a strong correlation between level of occupation and use and accessibility to media. It reveals complex phenomena of social homogenization and differentiation. Data is extracted from a sample of workers who completed a questionnaire which focused on use of media.

Animal-cell culture media: History, characteristics, and current issues.

PubMed

Yao, Tatsuma; Asayama, Yuta

2017-04-01

Cell culture technology has spread prolifically within a century, a variety of culture media has been designed. This review goes through the history, characteristics and current issues of animal-cell culture media. A literature search was performed on PubMed and Google Scholar between 1880 and May 2016 using appropriate keywords. At the dawn of cell culture technology, the major components of media were naturally derived products such as serum. The field then gradually shifted to the use of chemical-based synthetic media because naturally derived ingredients have their disadvantages such as large batch-to-batch variation. Today, industrially important cells can be cultured in synthetic media. Nevertheless, the combinations and concentrations of the components in these media remain to be optimized. In addition, serum-containing media are still in general use in the field of basic research. In the fields of assisted reproductive technologies and regenerative medicine, some of the medium components are naturally derived in nearly all instances. Further improvements of culture media are desirable, which will certainly contribute to a reduction in the experimental variation, enhance productivity among biopharmaceuticals, improve treatment outcomes of assisted reproductive technologies, and facilitate implementation and popularization of regenerative medicine.

Vibration damping of elastic waves in electrically conducting media subjected to high magnetic fields

NASA Technical Reports Server (NTRS)

Horwath, T. G.

1992-01-01

The propagation of vibrational energy in bulk, torsional, and flexural modes, in electrically conducting media can undergo strong attenuation if subjected to high magnetic fields in certain spatial arrangements. The reasons for this are induced Eddy currents which are generated by the volume elements in the media moving transversally to the magnetic field at acoustic velocities. In magnetic fields achievable with superconductors, the non-conservative (dissipative) forces are compared to the elastic and inertial forces for most metals. Strong dissipation of vibrational energy in the form of heat takes place as a result. A simplified theory is presented based on engineering representations of electrodynamics, attenuation values for representative metals are calculated, and problems encountered in formulating a generalized theory based on electrodynamics of moving media are discussed. General applications as well as applications specific to maglev are discussed.

Media multitasking is associated with symptoms of depression and social anxiety.

PubMed

Becker, Mark W; Alzahabi, Reem; Hopwood, Christopher J

2013-02-01

We investigated whether multitasking with media was a unique predictor of depression and social anxiety symptoms. Participants (N=318) completed measures of their media use, personality characteristics, depression, and social anxiety. Regression analyses revealed that increased media multitasking was associated with higher depression and social anxiety symptoms, even after controlling for overall media use and the personality traits of neuroticism and extraversion. The unique association between media multitasking and these measures of psychosocial dysfunction suggests that the growing trend of multitasking with media may represent a unique risk factor for mental health problems related to mood and anxiety. Further, the results strongly suggest that future research investigating the impact of media use on mental health needs to consider the role that multitasking with media plays in the relationship.

The Effect of Wettability Heterogeneity on Relative Permeability of Two-Phase Flow in Porous Media: A Lattice Boltzmann Study

DOE PAGES

Zhao, Jianlin; Kang, Qinjun; Yao, Jun; ...

2018-02-27

Relative permeability is a critical parameter characterizing multiphase flow in porous media and it is strongly dependent on the wettability. In many situations, the porous media are nonuniformly wet. In this study, to investigate the effect of wettability heterogeneity on relative permeability of two-phase flow in porous media, a multi-relaxation-time color-gradient lattice Boltzmann model is adopted to simulate oil/water two-phase flow in porous media with different oil-wet solid fractions. For the water phase, when the water saturation is high, the relative permeability of water increases with the increase of oil-wet solid fraction under a constant water saturation. However, as themore » water saturation decreases to an intermediate value (about 0.4–0.7), the relative permeability of water in fractionally wet porous media could be lower than that in purely water-wet porous media, meaning additional flow resistance exists in the fractionally wet porous media. For the oil phase, similar phenomenon is observed. This phenomenon is mainly caused by the wettability-related microscale fluid distribution. According to both our simulation results and theoretical analysis, it is found that the relative permeability of two-phase flow in porous media is strongly related to three parameters: the fluid saturation, the specific interfacial length of fluid, and the fluid tortuosity in the flow direction. Lastly, the relationship between the relative permeability and these parameters under different capillary numbers is explored in this paper.« less

The Effect of Wettability Heterogeneity on Relative Permeability of Two-Phase Flow in Porous Media: A Lattice Boltzmann Study

NASA Astrophysics Data System (ADS)

Zhao, Jianlin; Kang, Qinjun; Yao, Jun; Viswanathan, Hari; Pawar, Rajesh; Zhang, Lei; Sun, Hai

2018-02-01

Relative permeability is a critical parameter characterizing multiphase flow in porous media and it is strongly dependent on the wettability. In many situations, the porous media are nonuniformly wet. To investigate the effect of wettability heterogeneity on relative permeability of two-phase flow in porous media, a multi-relaxation-time color-gradient lattice Boltzmann model is adopted to simulate oil/water two-phase flow in porous media with different oil-wet solid fractions. For the water phase, when the water saturation is high, the relative permeability of water increases with the increase of oil-wet solid fraction under a constant water saturation. However, as the water saturation decreases to an intermediate value (about 0.4-0.7), the relative permeability of water in fractionally wet porous media could be lower than that in purely water-wet porous media, meaning additional flow resistance exists in the fractionally wet porous media. For the oil phase, similar phenomenon is observed. This phenomenon is mainly caused by the wettability-related microscale fluid distribution. According to both our simulation results and theoretical analysis, it is found that the relative permeability of two-phase flow in porous media is strongly related to three parameters: the fluid saturation, the specific interfacial length of fluid, and the fluid tortuosity in the flow direction. The relationship between the relative permeability and these parameters under different capillary numbers is explored in this paper.

The Effect of Wettability Heterogeneity on Relative Permeability of Two-Phase Flow in Porous Media: A Lattice Boltzmann Study

DOE Office of Scientific and Technical Information (OSTI.GOV)

Zhao, Jianlin; Kang, Qinjun; Yao, Jun

Relative permeability is a critical parameter characterizing multiphase flow in porous media and it is strongly dependent on the wettability. In many situations, the porous media are nonuniformly wet. In this study, to investigate the effect of wettability heterogeneity on relative permeability of two-phase flow in porous media, a multi-relaxation-time color-gradient lattice Boltzmann model is adopted to simulate oil/water two-phase flow in porous media with different oil-wet solid fractions. For the water phase, when the water saturation is high, the relative permeability of water increases with the increase of oil-wet solid fraction under a constant water saturation. However, as themore » water saturation decreases to an intermediate value (about 0.4–0.7), the relative permeability of water in fractionally wet porous media could be lower than that in purely water-wet porous media, meaning additional flow resistance exists in the fractionally wet porous media. For the oil phase, similar phenomenon is observed. This phenomenon is mainly caused by the wettability-related microscale fluid distribution. According to both our simulation results and theoretical analysis, it is found that the relative permeability of two-phase flow in porous media is strongly related to three parameters: the fluid saturation, the specific interfacial length of fluid, and the fluid tortuosity in the flow direction. Lastly, the relationship between the relative permeability and these parameters under different capillary numbers is explored in this paper.« less

Perspectives for the Use of Social Media in e-Pharmamarketing

PubMed Central

Syrkiewicz-Świtała, Magdalena; Romaniuk, Piotr; Ptak, Ewa

2016-01-01

The Internet has become a common and global medium. It contains vast information resources and a wide range of communication instruments. One of the communication channels are social media, which increasingly are also used in the business field. Social media combined with mobile technology introduced new challenges to marketing activity. This trend is also observed on specific and highly regulated drug market. The aim of this article is to describe the perspectives for the use of social media in e-pharmamarketing. We find that this require personalized communication, the use of online promotion tools, in order to perform advertising in contact with a demanding client. Currently pharmaceutical companies use social media to communicate basic information on their life, but they still do not appreciate it sufficiently as a tool to build the image of company or products. It is therefore considered that these companies should attach greater importance to the presence in this type of media, especially in the light of dynamic changes in the way people communicate. PMID:27917126

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Perspectives for the Use of Social Media in e-Pharmamarketing.

PubMed

Syrkiewicz-Świtała, Magdalena; Romaniuk, Piotr; Ptak, Ewa

2016-01-01

The Internet has become a common and global medium. It contains vast information resources and a wide range of communication instruments. One of the communication channels are social media, which increasingly are also used in the business field. Social media combined with mobile technology introduced new challenges to marketing activity. This trend is also observed on specific and highly regulated drug market. The aim of this article is to describe the perspectives for the use of social media in e-pharmamarketing. We find that this require personalized communication, the use of online promotion tools, in order to perform advertising in contact with a demanding client. Currently pharmaceutical companies use social media to communicate basic information on their life, but they still do not appreciate it sufficiently as a tool to build the image of company or products. It is therefore considered that these companies should attach greater importance to the presence in this type of media, especially in the light of dynamic changes in the way people communicate.

Data-centric method for object observation through scattering media

NASA Astrophysics Data System (ADS)

Tanida, Jun; Horisaki, Ryoichi

2018-03-01

A data-centric method is introduced for object observation through scattering media. A large number of training pairs are used to characterize the relation between the object and the observation signals based on machine learning. Using the method object information can be retrieved even from strongly-disturbed signals. As potential applications, object recognition, imaging, and focusing through scattering media were demonstrated.

Social media as a tool for antimicrobial stewardship.

PubMed

Pisano, Jennifer; Pettit, Natasha; Bartlett, Allison; Bhagat, Palak; Han, Zhe; Liao, Chuanhong; Landon, Emily

2016-11-01

To increase the reach of our antimicrobial stewardship program (ASP), social media platforms, Facebook and Twitter, were used to increase internal medicine residents' (IMRs') antibiotic (Abx) knowledge and awareness of ASP resources. Fifty-five of 110 (50%) IMRs consented to participate; 39 (71%) completed both pre- and postintervention surveys and followed our ASP on social media. Along with 20 basic Abx and infectious diseases (IDs) questions, this survey assessed IMR awareness of ASP initiatives, social media usage, and attitudes and beliefs surrounding Abx resistance. Over 6 months, IMRs received posts and Tweets of basic Abx/IDs trivia while promoting use of educational tools and clinical pathways on our ASP Web site. To compare pre- and postsurvey responses, McNemar test or Stuart-Maxwell test was used for categorical variables, and paired t test or Wilcoxon signed-rank test was used for continuous variables, as appropriate. Of the IMRs, 98% and 58% use Facebook and Twitter, respectively. To compare pre- and postintervention, median scores for Abx knowledge increased from 12 (interquartile range, 8-13) to 13 (interquartile range, 11-15; P = .048); IMRs knowing how to access the ASP Web site increased from 70% to 94%. More IMRs indicated that they used the clinical pathways "sometimes, frequently, or always" after the intervention (33% vs 61%, P = .004). Social media is a valuable tool to reinforce ASP initiatives while encouraging the use of ASP resources to promote antimicrobial mindfulness. Copyright © 2016 Association for Professionals in Infection Control and Epidemiology, Inc. Published by Elsevier Inc. All rights reserved.

Measuring the level of public understanding of total solar eclipse from the mass media: Palembang as sample

NASA Astrophysics Data System (ADS)

Purwati, F. G.; Ekawanti, N.; Luthfiandari; Premadi, P. W.

2016-11-01

The Total Solar Eclipse (TSE) on the 9th March 2016 received a huge attention from the mass media. Some of them intensively write articles about it even months before the TSE day. As we know media plays strategic role not only in raising public awareness but also interest. The aim of this project is to study the relation between the number of accesses to the media information and how well public learned the information delivered by the media. We prepared questionnaire consisting of seven semi-multiple choices on how public got information about TSE. We gave them choices of what they had heard to measure their basic understanding of TSE. Furthermore we add two “wrong” choices in the last questions to identify less serious respondents. We analyze 60 respondents of Palembang who visited Ampera bridge area. Our result shows no correlation between the number of information access and the level of understanding about TSE. We also found that local media did not provide the scientific content of TSE as well as the national media.

Spontaneous Hedonic Reactions to Social Media Cues.

PubMed

van Koningsbruggen, Guido M; Hartmann, Tilo; Eden, Allison; Veling, Harm

2017-05-01

Why is it so difficult to resist the desire to use social media? One possibility is that frequent social media users possess strong and spontaneous hedonic reactions to social media cues, which, in turn, makes it difficult to resist social media temptations. In two studies (total N = 200), we investigated less-frequent and frequent social media users' spontaneous hedonic reactions to social media cues using the Affect Misattribution Procedure-an implicit measure of affective reactions. Results demonstrated that frequent social media users showed more favorable affective reactions in response to social media (vs. control) cues, whereas less-frequent social media users' affective reactions did not differ between social media and control cues (Studies 1 and 2). Moreover, the spontaneous hedonic reactions to social media (vs. control) cues were related to self-reported cravings to use social media and partially accounted for the link between social media use and social media cravings (Study 2). These findings suggest that frequent social media users' spontaneous hedonic reactions in response to social media cues might contribute to their difficulties in resisting desires to use social media.

Basic techniques in mammalian cell tissue culture.

PubMed

Phelan, Katy; May, Kristin M

2015-03-02

Cultured mammalian cells are used extensively in cell biology studies. It requires a number of special skills in order to be able to preserve the structure, function, behavior, and biology of the cells in culture. This unit describes the basic skills required to maintain and preserve cell cultures: maintaining aseptic technique, preparing media with the appropriate characteristics, passaging, freezing and storage, recovering frozen stocks, and counting viable cells. Copyright © 2015 John Wiley & Sons, Inc.

A Primer on Choosing the Medium for Multimedia: Videodisc vs. Videotape.

ERIC Educational Resources Information Center

Shamp, Scott A.

1993-01-01

Discusses videodisc and videotape basic needs, software development issues, user workstation issues, appropriate applications for the different audio/visual storage media, counter vs. time-code VCRs, and implications for student development. (MDH)

Joint Replacement Surgery: Health Information Basics for You and Your Family

MedlinePlus

... information on research progress in these diseases. Contact Us NIAMS Archive Viewers and Players Social Media Moderation Policy FOIA Privacy Statement Accessibility Disclaimer Digital Strategy Open Source Data Public Data Listing NIH... ...

The Strong Ring: A Basic Interest Model of Occupational Structure

ERIC Educational Resources Information Center

Armstrong, Patrick Ian; Smith, Thomas J.; Donnay, David A. C.; Rounds, James

2004-01-01

A classification system and spatial map of occupations were developed using the Basic Interest Scale profiles of 198 occupational incumbent samples (31,010 women; 32,421 men) from the Strong Interest Inventory. Profile shape was found to be similar for incumbents of both genders, allowing for an analysis of combined-gender samples. Using…

Correlated Photon Dynamics in Dissipative Rydberg Media

NASA Astrophysics Data System (ADS)

Zeuthen, Emil; Gullans, Michael J.; Maghrebi, Mohammad F.; Gorshkov, Alexey V.

2017-07-01

Rydberg blockade physics in optically dense atomic media under the conditions of electromagnetically induced transparency (EIT) leads to strong dissipative interactions between single photons. We introduce a new approach to analyzing this challenging many-body problem in the limit of a large optical depth per blockade radius. In our approach, we separate the single-polariton EIT physics from Rydberg-Rydberg interactions in a serialized manner while using a hard-sphere model for the latter, thus capturing the dualistic particle-wave nature of light as it manifests itself in dissipative Rydberg-EIT media. Using this approach, we analyze the saturation behavior of the transmission through one-dimensional Rydberg-EIT media in the regime of nonperturbative dissipative interactions relevant to current experiments. Our model is able to capture the many-body dynamics of bright, coherent pulses through these strongly interacting media. We compare our model with available experimental data in this regime and find good agreement. We also analyze a scheme for generating regular trains of single photons from continuous-wave input and derive its scaling behavior in the presence of imperfect single-photon EIT.

The impact of distinct culture media in Leishmania infantum biology and infectivity.

PubMed

Santarém, Nuno; Cunha, Joana; Silvestre, Ricardo; Silva, Cátia; Moreira, Diana; Ouellette, Marc; Cordeiro-DA-Silva, Anabela

2014-02-01

An ideal culture medium for Leishmania promastigotes should retain the basic characteristics of promastigotes found in sandflies (morphology and infectivity). Furthermore, the media should not create a bias in experimental settings, thus enabling the proper extrapolation of results. To assess this we studied several established media for promastigote growth. We analysed morphology, viability, cell cycle progression, metacyclic profile, capacity to differentiate into axenic amastigotes and infectivity. Furthermore, using a rational approach from the evaluated media we developed a simple serum-free medium (cRPMI). We report that parasites growing in different media present different biological characteristics and distinct in vitro and in vivo infectivities. The developed medium, cRPMI, proved to be a less expensive substitute for traditional serum-supplemented media for the in vitro maintenance of promastigotes. In fact, cRPMI is ideal for the maintenance of parasites in the laboratory, diminishing the expected loss of virulence over time typical of the parasite cultivation. Ultimately this report is a clear warning that the normalization of culture media should be a real concern in the field as media-specific phenomena are sufficient to induce biological bias with consequences in infectivity and general parasite biology.

Attention Strongly Modulates Reliability of Neural Responses to Naturalistic Narrative Stimuli.

PubMed

Ki, Jason J; Kelly, Simon P; Parra, Lucas C

2016-03-09

Attentional engagement is a major determinant of how effectively we gather information through our senses. Alongside the sheer growth in the amount and variety of information content that we are presented with through modern media, there is increased variability in the degree to which we "absorb" that information. Traditional research on attention has illuminated the basic principles of sensory selection to isolated features or locations, but it provides little insight into the neural underpinnings of our attentional engagement with modern naturalistic content. Here, we show in human subjects that the reliability of an individual's neural responses with respect to a larger group provides a highly robust index of the level of attentional engagement with a naturalistic narrative stimulus. Specifically, fast electroencephalographic evoked responses were more strongly correlated across subjects when naturally attending to auditory or audiovisual narratives than when attention was directed inward to a mental arithmetic task during stimulus presentation. This effect was strongest for audiovisual stimuli with a cohesive narrative and greatly reduced for speech stimuli lacking meaning. For compelling audiovisual narratives, the effect is remarkably strong, allowing perfect discrimination between attentional state across individuals. Control experiments rule out possible confounds related to altered eye movement trajectories or order of presentation. We conclude that reliability of evoked activity reproduced across subjects viewing the same movie is highly sensitive to the attentional state of the viewer and listener, which is aided by a cohesive narrative. Copyright © 2016 Ki et al.

The Ratu River Expedition - A Case Study in Successful Outreach Using Film and Social Media

NASA Astrophysics Data System (ADS)

Kerlow, Isaac

2016-04-01

The Ratu River Expedition is a 25-minute film about earthquakes in Nepal made for a general audience and for a Nepalese audience in particular. The movie explains basic facts about seismic activity in the Himalaya region and also basic preparedness concepts. It showcases the scientific research of the Structural Geology group at the Earth Observatory of Singapore in collaboration with the Department of Mines and Geology, Nepal. A social media campaign was developed to bring the movie to a large Nepalese audience, and the Nepali-subtitled version of the movie yielded over 79,000 post Likes in a Facebook outreach campaign. This presentation reviews the development, production, and distribution of this highly successful natural hazards documentary with scientific depth but designed for a mainstream audience. The full movie is being shown at EGU's Geo-Cinema 2016. http://raturiver.com/

An algorithm for analytical solution of basic problems featuring elastostatic bodies with cavities and surface flaws

NASA Astrophysics Data System (ADS)

Penkov, V. B.; Levina, L. V.; Novikova, O. S.; Shulmin, A. S.

2018-03-01

Herein we propose a methodology for structuring a full parametric analytical solution to problems featuring elastostatic media based on state-of-the-art computing facilities that support computerized algebra. The methodology includes: direct and reverse application of P-Theorem; methods of accounting for physical properties of media; accounting for variable geometrical parameters of bodies, parameters of boundary states, independent parameters of volume forces, and remote stress factors. An efficient tool to address the task is the sustainable method of boundary states originally designed for the purposes of computerized algebra and based on the isomorphism of Hilbertian spaces of internal states and boundary states of bodies. We performed full parametric solutions of basic problems featuring a ball with a nonconcentric spherical cavity, a ball with a near-surface flaw, and an unlimited medium with two spherical cavities.

Astronomy: social background of students of the integrated high school

NASA Astrophysics Data System (ADS)

Voelzke, M. R.; Barbosa, J. I. L.

2017-07-01

Astronomy-related contents exist in almost all levels of basic education in Brazil and are also frequently disseminated through mass media. Thus, students form their own explanations about the phenomena studied by this science. Therefore, this work has the objective of identifying the possible social background of the Integrated High School students on the term Astronomy. It is a research of a basic nature, descriptive, and for that reason a quali-quantitative approach was adopted; the procedures to obtain the data were effected in the form of a survey. The results show that the tested students have a social background about the object Astronomy, which is on the one hand fortified by elements they have made or which is part of the experience lived by the respondents within the formal space of education, and on the other hand based on elements possibly disseminated through the mass media.

The contribution of physical activity and media use during childhood and adolescence to adult women's body image.

PubMed

Slater, Amy; Tiggemann, Marika

2006-07-01

This study aimed to investigate the effects of both past and current physical activity and media use on women's body image. A sample of 144 female undergraduate students completed measures of current physical activity, media use and body image, as well as providing retrospective reports of their physical activity participation and media usage during childhood and adolescence. Regression analyses showed that childhood experiences of physical activity and media use predicted adult body-image concerns more strongly than current activities. It was concluded that early experiences of both physical activity and media use during childhood and adolescence play an important role in the development of adult women's body image.

Formatting scripts with computers and Extended BASIC.

PubMed

Menning, C B

1984-02-01

A computer program, written in the language of Extended BASIC, is presented which enables scripts, for educational media, to be quickly written in a nearly unformatted style. From the resulting script file, stored on magnetic tape or disk, the computer program formats the script into either a storyboard , a presentation, or a narrator 's script. Script headings and page and paragraph numbers are automatic features in the word processing. Suggestions are given for making personal modifications to the computer program.

Students’ profile of heat and temperature using HTCE in undergraduate physics

NASA Astrophysics Data System (ADS)

Arya Nugraha, Dewanta; Suparmi, A.; Winarni, Retno; Suciati

2017-11-01

Understanding heat and temperature are important to make strong fundamental of physics before understanding the other subject materials. This research aims to describe the students’ conception of heat and temperature using Heat and Temperature Conceptual Evaluation (HTCE) developed by Thornton and Sokoloff. This research subjects are 10 students of 3rd semester and 24 students of 5th semester Bachelor of Physics. The data collection methods are test and interview. The result are the students’ conception of heat and temperature, rate of cooling, calorimetry, rate of heat transfer, perception of hotness, specific heat capacity, change of phase, thermal conductivity. Students are getting difficult on understanding the concept of heat and temperature especially the concept of rate of cooling, change of phase, and rate of heat transfer. The average students’ correct answer is 44.88% of 34 students. The lowest mean score is the concept of RHT with the percentage of 17.65%. This research could be used to develop learning media on basic physics course.

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids.

PubMed

Dahlberg, Jerry; Tkacik, Peter T; Mullany, Brigid; Fleischhauer, Eric; Shahinian, Hossein; Azimi, Farzad; Navare, Jayesh; Owen, Spencer; Bisel, Tucker; Martin, Tony; Sholar, Jodie; Keanini, Russell G

2017-12-04

An analog, macroscopic method for studying molecular-scale hydrodynamic processes in dense gases and liquids is described. The technique applies a standard fluid dynamic diagnostic, particle image velocimetry (PIV), to measure: i) velocities of individual particles (grains), extant on short, grain-collision time-scales, ii) velocities of systems of particles, on both short collision-time- and long, continuum-flow-time-scales, iii) collective hydrodynamic modes known to exist in dense molecular fluids, and iv) short- and long-time-scale velocity autocorrelation functions, central to understanding particle-scale dynamics in strongly interacting, dense fluid systems. The basic system is composed of an imaging system, light source, vibrational sensors, vibrational system with a known media, and PIV and analysis software. Required experimental measurements and an outline of the theoretical tools needed when using the analog technique to study molecular-scale hydrodynamic processes are highlighted. The proposed technique provides a relatively straightforward alternative to photonic and neutron beam scattering methods traditionally used in molecular hydrodynamic studies.

Preparation of polyhedral oligomeric silsesquioxane based hybrid monoliths by ring-opening polymerization for capillary LC and CEC.

PubMed

Lin, Hui; Zhang, Zhenbin; Dong, Jing; Liu, Zhongshan; Ou, Junjie; Zou, Hanfa

2013-09-01

A new organic-inorganic hybrid monolith was prepared by the ring-opening polymerization of octaglycidyldimethylsilyl polyhedral oligomeric silsesquioxane (POSS) with 1,4-butanediamine (BDA) using 1-propanol, 1,4-butanediol, and PEG 10,000 as a porogenic system. Benefiting from the moderate phase separation process, the resulting poly(POSS-co-BDA) hybrid monolith possessed a uniform microstructure and exhibited excellent performance in chromatographic applications. Neutral, acidic, and basic compounds were successfully separated on the hybrid monolith in capillary LC (cLC), and high column efficiencies were achieved in all of the separations. In addition, as the amino groups could generate a strong EOF, the hybrid monolith was also applied in CEC for the separation of neutral and polar compounds, and a satisfactory performance was obtained. These results demonstrate that the poly(POSS-co-BDA) hybrid monolith is a good separation media in chromatographic separations of various types of compounds by both cLC and CEC. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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Media Reporting of Practice-Changing Clinical Trials in Oncology: A North American Perspective.

PubMed

Andrew, Peter; Vickers, Michael M; O'Connor, Stephen; Valdes, Mario; Tang, Patricia A

2016-03-01

Media reporting of clinical trials impacts patient-oncologist interactions. We sought to characterize the accuracy of media and Internet reporting of practice-changing clinical trials in oncology. The first media articles referencing 17 practice-changing clinical trials were collected from 4 media outlets: newspapers, cable news, cancer websites, and industry websites. Measured outcomes were media reporting score, social media score, and academic citation score. The media reporting score was a measure of completeness of information detailed in media articles as scored by a 15-point scoring instrument. The social media score represented the ubiquity of social media presence referencing 17 practice-changing clinical trials in cancer as determined by the American Society of Clinical Oncology in its annual report, entitled Clinical Cancer Advances 2012; social media score was calculated from Twitter, Facebook, and Google searches. The academic citation score comprised total citations from Google Scholar plus the Scopus database, which represented the academic impact per clinical cancer advance. From 170 media articles, 107 (63%) had sufficient data for analysis. Cohen's κ coefficient demonstrated reliability of the media reporting score instrument with a coefficient of determination of 94%. Per the media reporting score, information was most complete from industry, followed by cancer websites, newspapers, and cable news. The most commonly omitted items, in descending order, were study limitations, exclusion criteria, conflict of interest, and other. The social media score was weakly correlated with academic citation score. Media outlets appear to have set a low bar for coverage of many practice-changing advances in oncology, with reports of scientific breakthroughs often omitting basic study facts and cautions, which may mislead the public. The media should be encouraged to use a standardized reporting template and provide accessible references to original source information whenever feasible. ©AlphaMed Press.

[Relevance of contrast ultrasound with microbubbles in vascular medecine].

PubMed

Erdmann, Andreas; Ney, Barbara; Alatri, Adriano; Calanca, Luca; Mazzolai, Lucia

2016-12-07

Application of ultrasound contrast media has become a standard in diagnostic imaging in cardiology and in the characterization of focal lesions in multiple organs, especially of the liver. In the past years there was a growing body of evidence for their usefulness in vascular medicine. The development of contrast media, microbubbles with a stabilizing envelope and filled with gaz, small enough to pass through pulmonary capillaries made real-time imaging of organ perfusion possible. Ultrasound contrast media are rapidly eliminated by exhalation and can safely be administered to patients with renal failure. The objective of this review is to describe the basic principles of ultrasound contrast imaging and to inform about vascular applications of contrast ultrasound.

Does media coverage influence the spread of drug addiction?

NASA Astrophysics Data System (ADS)

Ma, Mingju; Liu, Sanyang; Li, Jun

2017-09-01

In this paper, a three dimensional drug model is constructed to investigate the impact of media coverage on the spread and control of drug addiction. The dynamical behavior of the model is studied by using the basic reproduction number R0. The drug-free equilibrium is globally asymptotically stable if R0 < 1 and the drug addiction equilibrium is locally stable if R0 > 1. The results demonstrate that the media effect in human population cannot change the stabilities of equilibria but can affect the number of drug addicts. Sensitivity analyses are performed to seek for effective control measures for drug treatment. Numerical simulations are given to support the theoretical results.

Contextual approach using VBA learning media to improve students’ mathematical displacement and disposition ability

NASA Astrophysics Data System (ADS)

Chotimah, Siti; Bernard, M.; Wulandari, S. M.

2018-01-01

The main problems of the research were the lack of reasoning ability and mathematical disposition of students to the learning of mathematics in high school students in Cimahi - West Java. The lack of mathematical reasoning ability in students was caused by the process of learning. The teachers did not train the students to do the problems of reasoning ability. The students still depended on each other. Sometimes, one of patience teacher was still guiding his students. In addition, the basic ability aspects of students also affected the ability the mathematics skill. Furthermore, the learning process with contextual approach aided by VBA Learning Media (Visual Basic Application for Excel) gave the positive influence to the students’ mathematical disposition. The students are directly involved in learning process. The population of the study was all of the high school students in Cimahi. The samples were the students of SMA Negeri 4 Cimahi class XIA and XIB. There were both of tested and non-tested instruments. The test instrument was a description test of mathematical reasoning ability. The non-test instruments were questionnaire-scale attitudes about students’ mathematical dispositions. This instrument was used to obtain data about students’ mathematical reasoning and disposition of mathematics learning with contextual approach supported by VBA (Visual Basic Application for Excel) and by conventional learning. The data processed in this study was from the post-test score. These scores appeared from both of the experimental class group and the control class group. Then, performing data was processed by using SPSS 22 and Microsoft Excel. The data was analyzed using t-test statistic. The final result of this study concluded the achievement and improvement of reasoning ability and mathematical disposition of students whose learning with contextual approach supported by learning media of VBA (Visual Basic Application for Excel) was better than students who got conventional learning.

Comparison of human dermal fibroblasts (HDFs) growth rate in culture media supplemented with or without basic fibroblast growth factor (bFGF).

PubMed

Abdian, Narges; Ghasemi-Dehkordi, Payam; Hashemzadeh-Chaleshtori, Morteza; Ganji-Arjenaki, Mahbobe; Doosti, Abbas; Amiri, Beheshteh

2015-12-01

Basic fibroblast growth factor (bFGF or FGF-2) is a member of the FGF family secreted by different kinds of cells like HDFs and it is an important nutritional factor for cell growth and differentiation. The HDFs release bFGF in culture media at very low. The present study aims to investigate the HDFs growth rate in culture media supplemented either with or without bFGF. In brief, HDFs were isolated from human foreskin sample and were cultured in vitro in media containing bFGF and lack of this factor. The cells growth rate was calculated by trypan blue. The karyotyping was performed using G-banding to investigate the chromosomal abnormality of HDFs in both groups. Total RNA of each groups were extracted and cDNA samples were synthesized then, real-time Q-PCR was used to measure the expression level of p27kip1 and cyclin D1 genes normalized to internal control gene (GAPDH). The karyotype analysis showed that HDFs cultured in media or without bFGF had normal karyotype (46 chromosomes, XY) and chromosomal abnormalities were not observed. The cell growth rates in both groups were normal with proliferated exponentially but the slope of growth curve in HDFs cultured in media containing bFGF was increased. Karyotyp test showed that bFGF does not affect on cytogenetic stability of cells. The survey of p27kip1 and cyclin D1 genes by real-time Q-PCR showed that the expression level of these genes were up-regulated when adding bFGF in culture media (p < 0.05). The findings of the present study demonstrate that appropriate supplementation of culture media with growth factor like bFGF could enhance the proliferation and differentiation capacity of cells and improve cells growth rate. Similarly, fibroblast growth factors did not induce any chromosomal abnormality in cells. Furthermore, in HDFs cultured in bFGF supplemented media, the p27kip1 and cyclin D1 genes were up-regulated and suggesting an important role for bFGF in cell-cycle regulation and progression and fibroblast division stimulation. It also suggests that the effects of bFGF on different cell types with/or without production of bFGF or other regulation factors be investigated in future.

The extraction of N,N-dialkylamides III. A thermodynamical approach of the multicomponent extraction organic media by a statistical mechanic theory

DOE Office of Scientific and Technical Information (OSTI.GOV)

Condamines, N.; Musikas, C.; Turq, P.

1993-04-01

The non-ideality of multicomponent media are difficult to describe, especially for situations as complex as the extraction of metals into organic media. We present a simplified model which takes into account hard-sphere' effects and physical interactions between some solutes of the studied media in the case of actinide ions liquid-liquid extraction. We focus our interest on N,N-dialkylamides extractants which have a strong non-ideal behaviour. 24 refs., 10 figs., 6 tabs.

CD Recorders.

ERIC Educational Resources Information Center

Falk, Howard

1998-01-01

Discussion of CD (compact disc) recorders describes recording applications, including storing large graphic files, creating audio CDs, and storing material downloaded from the Internet; backing up files; lifespan; CD recording formats; continuous recording; recording software; recorder media; vulnerability of CDs; basic computer requirements; and…

Communications and Information: Compendium of Communications and Information Terminology

DTIC Science & Technology

2002-02-01

Basic Access Module BASIC— Beginners All-Purpose Symbolic Instruction Code BBP—Baseband Processor BBS—Bulletin Board Service (System) BBTC—Broadband...media, formats and labels, programming language, computer documentation, flowcharts and terminology, character codes, data communications and input

A novel surveillance approach for disaster mental health

PubMed Central

Shankardass, Ketan; Subramanian, S. V.; Galea, Sandro

2017-01-01

Background Disasters have substantial consequences for population mental health. Social media data present an opportunity for mental health surveillance after disasters to help identify areas of mental health needs. We aimed to 1) identify specific basic emotions from Twitter for the greater New York City area during Hurricane Sandy, which made landfall on October 29, 2012, and to 2) detect and map spatial temporal clusters representing excess risk of these emotions. Methods We applied an advanced sentiment analysis on 344,957 Twitter tweets in the study area over eleven days, from October 22 to November 1, 2012, to extract basic emotions, a space-time scan statistic (SaTScan) and a geographic information system (QGIS) to detect and map excess risk of these emotions. Results Sadness and disgust were among the most prominent emotions identified. Furthermore, we noted 24 spatial clusters of excess risk of basic emotions over time: Four for anger, one for confusion, three for disgust, five for fear, five for sadness, and six for surprise. Of these, anger, confusion, disgust and fear clusters appeared pre disaster, a cluster of surprise was found peri disaster, and a cluster of sadness emerged post disaster. Conclusions We proposed a novel syndromic surveillance approach for mental health based on social media data that may support conventional approaches by providing useful additional information in the context of disaster. We showed that excess risk of multiple basic emotions could be mapped in space and time as a step towards anticipating acute stress in the population and identifying community mental health need rapidly and efficiently in the aftermath of disaster. More studies are needed to better control for bias, identify associations with reliable and valid instruments measuring mental health, and to explore computational methods for continued model-fitting, causal relationships, and ongoing evaluation. Our study may be a starting point also for more fully elaborated models that can either prospectively detect mental health risk using real-time social media data or detect excess risk of emotional reactions in areas that lack efficient infrastructure during and after disasters. As such, social media data may be used for mental health surveillance after large scale disasters to help identify areas of mental health needs and to guide us in our knowledge where we may most effectively intervene to reduce the mental health consequences of disasters. PMID:28723959

A novel surveillance approach for disaster mental health.

PubMed

Gruebner, Oliver; Lowe, Sarah R; Sykora, Martin; Shankardass, Ketan; Subramanian, S V; Galea, Sandro

2017-01-01

Disasters have substantial consequences for population mental health. Social media data present an opportunity for mental health surveillance after disasters to help identify areas of mental health needs. We aimed to 1) identify specific basic emotions from Twitter for the greater New York City area during Hurricane Sandy, which made landfall on October 29, 2012, and to 2) detect and map spatial temporal clusters representing excess risk of these emotions. We applied an advanced sentiment analysis on 344,957 Twitter tweets in the study area over eleven days, from October 22 to November 1, 2012, to extract basic emotions, a space-time scan statistic (SaTScan) and a geographic information system (QGIS) to detect and map excess risk of these emotions. Sadness and disgust were among the most prominent emotions identified. Furthermore, we noted 24 spatial clusters of excess risk of basic emotions over time: Four for anger, one for confusion, three for disgust, five for fear, five for sadness, and six for surprise. Of these, anger, confusion, disgust and fear clusters appeared pre disaster, a cluster of surprise was found peri disaster, and a cluster of sadness emerged post disaster. We proposed a novel syndromic surveillance approach for mental health based on social media data that may support conventional approaches by providing useful additional information in the context of disaster. We showed that excess risk of multiple basic emotions could be mapped in space and time as a step towards anticipating acute stress in the population and identifying community mental health need rapidly and efficiently in the aftermath of disaster. More studies are needed to better control for bias, identify associations with reliable and valid instruments measuring mental health, and to explore computational methods for continued model-fitting, causal relationships, and ongoing evaluation. Our study may be a starting point also for more fully elaborated models that can either prospectively detect mental health risk using real-time social media data or detect excess risk of emotional reactions in areas that lack efficient infrastructure during and after disasters. As such, social media data may be used for mental health surveillance after large scale disasters to help identify areas of mental health needs and to guide us in our knowledge where we may most effectively intervene to reduce the mental health consequences of disasters.

Communication and Third World development: a dead end?

PubMed

Sonaike, S A

1988-01-01

The debate over the effects of communication on the development of the Third World goes back over 30 years. The mass media was supposed to teach the masses basic productive skills, complement formal education, and promote basic adult literacy. The theory was proposed that if you increase urbanization, literacy, and media participation in underdeveloped areas political and economic improvements would follow. In quantitative measures, much progress has been made in urbanization, literacy, and health care. However, the quality of life of the people in underdeveloped countries has not improved greatly. The mass media has often promoted capitalist ideals and values, and raised hopes beyond what the state could supply. Large transnational corporations advertising in these countries have introduced different ethical values and changed customer demand. This is seen as a threat by those countries to their cultural identity. Modernization has disrupted the traditional values and ways of life in many of these countries and increased the gap between the rich and poor. The dependency theory stated that development and underdevelopment were interrelated processes and effected all aspects of life, including political and economic aspects. In recent times, a new theory on the role of communication in development promotes an integration of traditional and modern methods to enhance the development messages. The culturalists believe the failure of the mass media in the past was the elitism of the modern media. The current theory is based on 2 concepts, 1 of intermediate technology and another appropriate technology. Intermediate technology is production by the masses, using the best knowledge and experience to serve the person, rather than making him the slave of machines. Appropriate technology aims at improving the quality of life of the people. communication must teach and promote the skills that will help people solve their problems in this new model.

pH-Dependent Solubility and Dissolution Behavior of Carvedilol--Case Example of a Weakly Basic BCS Class II Drug.

PubMed

Hamed, Rania; Awadallah, Areeg; Sunoqrot, Suhair; Tarawneh, Ola; Nazzal, Sami; AlBaraghthi, Tamadur; Al Sayyad, Jihan; Abbas, Aiman

2016-04-01

The objective of this study was to investigate the pH-dependent solubility and dissolution of weakly basic Biopharmaceutical Classification Systems (BCS) class II drugs, characterized by low solubility and high permeability, using carvedilol, a weak base with a pK a value of 7.8, as a model drug. A series of solubility and in vitro dissolution studies was carried out using media that simulate the gastric and intestinal fluids and cover the physiological pH range of the GI from 1.2 to 7.8. The effect of ionic strength, buffer capacity, and buffer species of the dissolution media on the solubility and dissolution behavior of carvedilol was also investigated. The study revealed that carvedilol exhibited a typical weak base pH-dependent solubility profile with a high solubility at low pH (545.1-2591.4 μg/mL within the pH range 1.2-5.0) and low solubility at high pH (5.8-51.9 μg/mL within the pH range 6.5-7.8). The dissolution behavior of carvedilol was consistent with the solubility results, where carvedilol release was complete (95.8-98.2% released within 60 min) in media simulating the gastric fluid (pH 1.2-5.0) and relatively low (15.9-86.2% released within 240 min) in media simulating the intestinal fluid (pH 6.5-7.8). It was found that the buffer species of the dissolution media may influence the solubility and consequently the percentage of carvedilol released by forming carvedilol salts of varying solubilities. Carvedilol solubility and dissolution decreased with increasing ionic strength, while lowering the buffer capacity resulted in a decrease in carvedilol solubility and dissolution rate.

Fast propagation of electromagnetic fields through graded-index media.

PubMed

Zhong, Huiying; Zhang, Site; Shi, Rui; Hellmann, Christian; Wyrowski, Frank

2018-04-01

Graded-index (GRIN) media are widely used for modeling different situations: some components are designed considering GRIN modulation, e.g., multi-mode fibers, optical lenses, or acousto-optical modulators; on the other hand, there are other components where the refractive-index variation is undesired due to, e.g., stress or heating; and finally, some effects in nature are characterized by a GRIN variation, like turbulence in air or biological tissues. Modeling electromagnetic fields propagating in GRIN media is then of high importance for optical simulation and design. Though ray tracing can be used to evaluate some basic effects in GRIN media, the field properties are not considered and evaluated. The general physical optics techniques, like finite element method or finite difference time domain, can be used to calculate fields in GRIN media, but they need great numerical effort or may even be impractical for large-scale components. Therefore, there still exists a demand for a fast physical optics model of field propagation through GRIN media on a large scale, which will be explored in this paper.

How managed a market? Modes of commissioning in England and Germany

PubMed Central

2013-01-01

Background In quasi-markets governance over healthcare providers is mediated by commissioners. Different commissioners apply different combinations of six methods of control ('media of power') for exercising governance: managerial performance, negotiation, discursive control, incentives, competition and juridical control. This paper compares how English and German healthcare commissioners do so. Methods Systematic comparison of observational national-level case studies in terms of six media of power, using data from multiple sources. Results The comparison exposes and contrasts two basic generic modes of commissioning: 1. Surrogate planning (English NHS), in which a negotiated order involving micro-commissioning, provider competition, financial incentives and penalties are the dominant media of commissioner power over providers. 2. Case-mix commissioning (Germany), in which managerial performance, an 'episode based' negotiated order and juridical controls appear the dominant media of commissioner power. Conclusions Governments do not necessarily maximise commissioners' power over providers by implementing as many media of power as possible because these media interact, some complementing and others inhibiting each other. In particular, patient choice of provider inhibits commissioners' use of provider competition as a means of control. PMID:23734631

Twitter 101 and beyond: introduction to social media platforms available to practicing hematologist/oncologists.

PubMed

Thompson, Michael A; Ahlstrom, Jenny; Dizon, Don S; Gad, Yash; Matthews, Greg; Luks, Howard J; Schorr, Andrew

2017-10-01

Social media utilizes specific media platforms to allow increased interactivity between participants. These platforms serve diverse groups and purposes including participation from patients, family caregivers, research scientists, physicians, and pharmaceutical companies. Utilization of these information outlets has increased with integration at conferences and between conferences with the use of hashtags and "chats". In the realm of the "e-Patient" it is key to not underestimate your audience. Highly technical information is just as useful as a basic post. With growing use, social media analytics help track the volume and impact of content. Additionally, platforms are leveraging each other for uses, including Twitter, blogs, web radio, and recorded video and images. We explore information on social media resources and applications from varying perspectives. While these platforms will evolve over time, or disappear with new platforms taking their place, it is apparent they are now a part of the everyday experience of oncology communication. Copyright © 2017 Elsevier Inc. All rights reserved.

Beyond the political model of reporting: nonspecific symptoms in media communication about AIDS.

PubMed

Check, W A

1987-01-01

Mass media have functioned well in transmitting much of the basic information about the AIDS epidemic; however, media coverage of AIDS has been flawed. In many ways these flaws have resulted from the limitations and conventions of traditional journalism, especially the need to appeal to a large mainstream audience and a reliance on authorities as sources and validators of information. News stories typically rely on a single articulate authority, and articles that involve conspiracy or controversy or have a high entertainment value are favored. Although coverage of politics and social issues is not distorted by these journalistic conventions, coverage of science suffers. Analysis of news coverage of AIDS shows that mass media often respond to sensationalism rather than to important scientific developments. In addition, scientific disagreements are better adjudicated by evidence than by appeals to authority. As a result, media coverage often obscures the process of scientific deliberation. Public health officials need to consider setting up a special channel of communications to clarify information about AIDS.

Basic Techniques in Mammalian Cell Tissue Culture.

PubMed

Phelan, Katy; May, Kristin M

2016-11-01

Cultured mammalian cells are used extensively in cell biology studies. It requires a number of special skills in order to be able to preserve the structure, function, behavior, and biology of the cells in culture. This unit describes the basic skills required to maintain and preserve cell cultures: maintaining aseptic technique, preparing media with the appropriate characteristics, passaging, freezing and storage, recovering frozen stocks, and counting viable cells. © 2016 by John Wiley & Sons, Inc. Copyright © 2016 John Wiley & Sons, Inc.

Hysteresis of Colloid Retention and Release in Saturated Porous Media During Transients in Solution Chemistry

USDA-ARS?s Scientific Manuscript database

Saturated packed column and micromodel transport studies wereconducted to gain insightonmechanismsof colloid retention and release under unfavorable attachment conditions. The initial deposition of colloids in porous media was found to be a strongly coupled process that depended on solution chemistr...

Rapid assessment of disaster damage using social media activity

PubMed Central

Kryvasheyeu, Yury; Chen, Haohui; Obradovich, Nick; Moro, Esteban; Van Hentenryck, Pascal; Fowler, James; Cebrian, Manuel

2016-01-01

Could social media data aid in disaster response and damage assessment? Countries face both an increasing frequency and an increasing intensity of natural disasters resulting from climate change. During such events, citizens turn to social media platforms for disaster-related communication and information. Social media improves situational awareness, facilitates dissemination of emergency information, enables early warning systems, and helps coordinate relief efforts. In addition, the spatiotemporal distribution of disaster-related messages helps with the real-time monitoring and assessment of the disaster itself. We present a multiscale analysis of Twitter activity before, during, and after Hurricane Sandy. We examine the online response of 50 metropolitan areas of the United States and find a strong relationship between proximity to Sandy’s path and hurricane-related social media activity. We show that real and perceived threats, together with physical disaster effects, are directly observable through the intensity and composition of Twitter’s message stream. We demonstrate that per-capita Twitter activity strongly correlates with the per-capita economic damage inflicted by the hurricane. We verify our findings for a wide range of disasters and suggest that massive online social networks can be used for rapid assessment of damage caused by a large-scale disaster. PMID:27034978

Rapid assessment of disaster damage using social media activity.

PubMed

Kryvasheyeu, Yury; Chen, Haohui; Obradovich, Nick; Moro, Esteban; Van Hentenryck, Pascal; Fowler, James; Cebrian, Manuel

2016-03-01

Could social media data aid in disaster response and damage assessment? Countries face both an increasing frequency and an increasing intensity of natural disasters resulting from climate change. During such events, citizens turn to social media platforms for disaster-related communication and information. Social media improves situational awareness, facilitates dissemination of emergency information, enables early warning systems, and helps coordinate relief efforts. In addition, the spatiotemporal distribution of disaster-related messages helps with the real-time monitoring and assessment of the disaster itself. We present a multiscale analysis of Twitter activity before, during, and after Hurricane Sandy. We examine the online response of 50 metropolitan areas of the United States and find a strong relationship between proximity to Sandy's path and hurricane-related social media activity. We show that real and perceived threats, together with physical disaster effects, are directly observable through the intensity and composition of Twitter's message stream. We demonstrate that per-capita Twitter activity strongly correlates with the per-capita economic damage inflicted by the hurricane. We verify our findings for a wide range of disasters and suggest that massive online social networks can be used for rapid assessment of damage caused by a large-scale disaster.

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Implementation of Plastic Media Blasting (PMB) at US Army Depots

DTIC Science & Technology

1988-01-01

with changing ambient humidity and to decay from fungus attack if they are not kept totally dry. Consequently, the ability to consistently maintain a...properties depending on the ambient relative humidity. In order to avoid any steel particles in the recycled media, they have added a strong magnet...proposals from various equipment and media manufacturers for installations at RRAD. PJD has concludd the following: Plastic medio is slower than sand

How Do You Measure Up?

ERIC Educational Resources Information Center

Miller, Marilyn L.; Shontz, Marilyn L.

1999-01-01

Presents findings from the "School Library Journal" survey of school library expenditures for FY 1997-98. Data include: budget allocation; salaries; library collection; technology; staff and certification; access to basic electronic resources; library policy; planning and communication between library media specialists and teachers; and…

'GREENER' CHEMICAL SYNTHESES USING ALTERNATE REACTION CONDITIONS

EPA Science Inventory

Microwave (MW) irradiation in conjunction with water as reaction media has proven to be a greener chemical approach for expeditious N-alkylation reactions of amines and hydrazines wherein the reactions under mildly basic conditions afford tertiary amines and double N-alkylation t...

Mass media approaches to reducing cardiovascular disease risk.

PubMed Central

Bellicha, T; McGrath, J

1990-01-01

A key function of a basic and clinical biomedical research organization is to communicate the findings of clinical investigations so that people may apply the results to improve their health and well-being. To help communicate results from cardiovascular disease research, the National Heart, Lung, and Blood Institute has established a series of national health education programs. The authors describe a model for two of the five programs and discuss the role of communication media in supporting national goals for education programs. The research basis for the programs is reviewed, together with the process by which the Institute develops information materials for mass media, notably public service announcements. A description of two national health education campaigns, hypertension and cholesterol, illustrates how market research is used to identify appropriate target audiences, develop messages, and select channels of communication. Lessons learned about the role of mass media in a national health education campaign are summarized. PMID:2113682

"Gay Guys are Shit-Lovers" and "Lesbians are Obsessed With Fingers": The (Mis)Representation of LGBTIQ People in Thai News Media.

PubMed

Fongkaew, Kangwan; Khruataeng, Anoporn; Unsathit, Sumon; Khamphiirathasana, Matawii; Jongwisan, Nisarat; Arlunaek, Oranong; Byrne, Jensen

2017-10-26

This article presents an analysis of news reports containing information or opinions about lesbian, gay, bisexual, transgender, intersex, and queer (LGBTIQ) people taken from six Thai media outlets over a period of one year. The aim was to explore how LGBTIQ people are portrayed in news media narratives. LGBTIQ identities were found to be vastly underrepresented and, when represented, were often represented inaccurately, stereotypically, harmfully, or without a clear understanding of the diversity of sexual orientations, gender identities, and gender expressions. (Hetero-)sexist narratives, negative portrayals, harmful stereotypes, and discriminatory speech were also widely found, fueling a climate of stigmatization and discrimination of LGBTIQ people in Thai society. This article suggests that key stakeholders in Thai news media should be sensitized on the human rights of LGBTIQ people and on basic professional ethics in journalism.

Identifying the effects of social media on health behavior: Data from a large-scale online experiment.

PubMed

Zhang, Jingwen; Brackbill, Devon; Yang, Sijia; Centola, Damon

2015-12-01

Sedentary lifestyle is an escalating epidemic. Little is known about whether or how social media can be used to design a cost-effective solution for sedentary lifestyle. In this article we describe the data from a randomized controlled trial (RCT) that evaluated two prominent strategies for conducting exercise interventions using elements of social media: motivational media campaigns and online peer networks. The data file includes 217 participants' basic demographic information, number of exercise class enrollments over 13 weeks, and self-reported number of days for exercise activities in the previous 7 days at baseline. Among the 217, 164 also have data on self-reported number of days for exercise activities at the post-program. Data are supplied with this article. The interpretation of these data can be found in the research article published by the authors in Preventive Medicine Reports in 2015 [1].

The New Media and Informal Learning

ERIC Educational Resources Information Center

Matijevic, Milan

2011-01-01

At the end of the last millennium, schools received strong competition from the Internet, multimedia and other developed electronic media thanks to the new possibilities for gathering, processing, searching for and sending information. Furthermore, young people and adults now travel a lot, and by travelling they also learn. Never before in the…

Sweet vs. Snap! Effective Dispositions in the Media Center

ERIC Educational Resources Information Center

Standard, April

2011-01-01

In "What Defines an Exemplary School Librarian," Jami Jones and Gail Bush make a strong argument that professional disposition is the key to a successful library media program. The authors emphasize the relevance of INTASC standards which specify that teachers must promote "positive social interaction and (develop) healthy and helping…

Using Social Media to Engage Students and Families

ERIC Educational Resources Information Center

Nielsen, Lisa

2014-01-01

Using social media in education requires putting some building blocks for success in place. A strong foundation for successful use of social networking in education starts by securing parent/guardian and student agreements. Social networking provides a powerful platform for learning and connecting. Facebook is not just for sharing status updates…

New Media Resistance: Barriers to Implementation of Computer Video Games in the Classroom

ERIC Educational Resources Information Center

Rice, John W.

2007-01-01

Computer video games are an emerging instructional medium offering strong degrees of cognitive efficiencies for experiential learning, team building, and greater understanding of abstract concepts. As with other new media adopted for use by instructional technologists for pedagogical purposes, barriers to classroom implementation have manifested…

Toward an Etiology of Media Use Motivations: The Role of Temperament in Media Use.

ERIC Educational Resources Information Center

Sherry, John L.

2001-01-01

Shows that the biologically rooted individual difference behavior variable of temperament was consistent and moderately strong causal factor in forming television use motivations among undergraduate students. Finds distinct patterns of relationships between temperament and all television use gratifications supporting the uses and gratifications…

Resonant absorption and amplification of circularly-polarized waves in inhomogeneous chiral media.

PubMed

Kim, Seulong; Kim, Kihong

2016-01-25

It has been found that in the media where the dielectric permittivity ε or the magnetic permeability μ is near zero and in transition metamaterials where ε or μ changes from positive to negative values, there occur a strong absorption or amplification of the electromagnetic wave energy in the presence of an infinitesimally small damping or gain and a strong enhancement of the electromagnetic fields. We attribute these phenomena to the mode conversion of transverse electromagnetic waves into longitudinal plasma oscillations and its inverse process. In this paper, we study analogous phenomena occurring in chiral media theoretically using the invariant imbedding method. In uniform isotropic chiral media, right-circularly-polarized and left-circularly-polarized waves are the eigen-modes of propagation with different effective refractive indices n(+) and n(-), whereas in the chiral media with a nonuniform impedance variation, they are no longer the eigenmodes and are coupled to each other. We find that both in uniform chiral slabs where either n(+) or n(-) is near zero and in chiral transition metamaterials where n(+) or n(-) changes from positive to negative values, a strong absorption or amplification of circularly-polarized waves occurs in the presence of an infinitesimally small damping or gain. We present detailed calculations of the mode conversion coefficient, which measures the fraction of the electromagnetic wave energy absorbed into the medium, for various configurations of ε and μ with an emphasis on the influence of a nonuniform impedance. We propose possible applications of these phenomena to linear and nonlinear optical devices that react selectively to the helicity of the circular polarization.

Time-dependent photon migration imaging

NASA Astrophysics Data System (ADS)

Sevick, Eva M.; Wang, NaiGuang; Chance, Britton

1992-02-01

Recently, the application of both time- and frequency-resolved fluorescence techniques for the determination of photon migration characteristics in strongly scattering media has been used to characterize the optical properties in strongly scattering media. Specifically, Chance and coworkers have utilized measurement of photon migration characteristics to determine tissue hemoglobin absorbance and ultimately oxygenation status in homogeneous tissues. In this study, we present simulation results and experimental measurements for both techniques to show the capacity of time-dependent photon migration characteristics to image optically obscure absorbers located in strongly scattering media. The applications of time-dependent photon imaging in the biomedical community include imaging of light absorbing hematomas, tumors, hypoxic tissue volumes, and other tissue abnormalities. Herein, we show that the time-resolved parameter of mean photon path length, , and the frequency- resolved parameter of phase-shift, (theta) , can be used similarly to obtain three dimensional information of absorber position from two-dimensional measurements. Finally, we show that unlike imaging techniques that monitor the intensity of light without regard to the migration characteristics, the resolution of time-dependent photon migration measurements is enhanced by tissue scattering, further potentiating their use for biomedical imaging.

Avoidable errors in dealing with anaphylactoid reactions to iodinated contrast media.

PubMed

Segal, Arthur J; Bush, William H

2011-03-01

Contrast reactions are much less common today than in the past. This is principally because of the current and predominant use of low and iso-osmolar contrast media compared with the prior use of high osmolality contrast media. As a result of the significantly diminished frequency, there are now fewer opportunities for physicians to recognize and appropriately treat such adverse reactions. In review of the literature combined with our own clinical and legal experience, 12 potential errors were identified and these are reviewed in detail so that they can be avoided by the physician-in-charge. Basic treatment considerations are presented along with a plan to systematize an approach to contrast reactions, simplify treatment options and plans, and schedule periodic drills.

IDENTIFICATION OF ODOR SUBSTANCES IN YAMABUSHITAKE MUSHROOM (Hericium erinaceum) CULTURE MEDIA CONTAINING 'SHOCHU' LEES AND STARCH WASTES, AND BASIC STUDIES ON THEIR DISAPPEARANCE

NASA Astrophysics Data System (ADS)

Yamauchi, Masahito; Matsumoto, Hirotaka; Yamada, Masayoshi; Yagi, Fumio; Murayama, Ryou; Yamaguchi, Yoshinori; Yamaguchi, Takashi

In this study, odor substances from mushroom culture media containing 'shochu' lees and starch wastes were identified and determined. It was apparent that in the media, acetoin, butyric acid and diacetyl were found as main odor substances, and mixed with some other ordor substances to produce unpleasant odor. The main substances disappeared with growth of mycelia. It was not likely that these ordor substances were degraded by extracellular enzymes but suggested that they were degraded by mycelia. Further it was found with the growth of mycelia that odor quality changed from rancid ordor (unpleasant ordor) to mushroom smell (pleasant odor) and the odor index was decreasing.

Processes affecting soil and groundwater contamination by DNAPL in low-permeability media

DOE Office of Scientific and Technical Information (OSTI.GOV)

McWhorter, D.B.

1996-08-01

This paper is one of a set of focus papers intended to document the current knowledge relevant to the contamination and remediation of soils and ground water by dense, nonaqueous phase liquids (DNAPL). The emphasis is on low permeability media such as fractured clay and till and unconsolidated, stratified formations. Basic concepts pertaining to immiscible-fluid mixtures are described and used to discuss such aspects as DNAPL transport, dissolved-phase transport, and equilibrium mass distributions. Several implications for remediation are presented. 27 refs., 8 figs., 4 tabs.

Looking to the future of new media in health marketing: deriving propositions based on traditional theories.

PubMed

Della, Lindsay J; Eroglu, Dogan; Bernhardt, Jay M; Edgerton, Erin; Nall, Janice

2008-01-01

Market trend data show that the media marketplace continues to rapidly evolve. Recent research shows that substantial portions of the U.S. media population are "new media" users. Today, more than ever before, media consumers are exposed to multiple media at the same point in time, encouraged to participate in media content generation, and challenged to learn, access, and use the new media that are continually entering the market. These media trends have strong implications for how consumers of health information access, process, and retain health-related knowledge. In this article we review traditional information processing models and theories of interpersonal and mass media access and consumption. We make several theory-based propositions for how traditional information processing and media consumption concepts will function as new media usage continues to increase. These propositions are supported by new media usage data from the Centers for Disease Control and Prevention's entry into the new media market (e.g., podcasting, virtual events, blogging, and webinars). Based on these propositions, we conclude by presenting both opportunities and challenges that public health communicators and marketers will face in the future.

The Coming of Age of Development Communication.

ERIC Educational Resources Information Center

Brace, Judy

1984-01-01

Reviews landmark projects in development communication since the formation of the Information Center on Instructional Technology in 1972, including Nicaragua's Radio Mathematics for the primary grades; India's Satellite Instructional Television; Guatemala's Basic Village Education Project; and the use of mass media to disseminate health…

Culturing and Using Protozoans in the Laboratory.

ERIC Educational Resources Information Center

Hummer, Paul J., Jr.

1993-01-01

Provides instructions for teachers and students to culture protozoans for use in science laboratories. Sections include setting up a culture area, basic culture media, amoeba culture technique, powdered milk-wheat-rice medium, alfalfa medium, and uses of the protozoa in the laboratory. (PR)

A Column Dispersion Experiment.

ERIC Educational Resources Information Center

Corapcioglu, M. Y.; Koroglu, F.

1982-01-01

Crushed glass and a Rhodamine B solution are used in a one-dimensional optically scanned column experiment to study the dispersion phenomenon in porous media. Results indicate that the described model gave satisfactory results and that the dispersion process in this experiment is basically convective. (DC)

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Hydra 1 data display system

NASA Technical Reports Server (NTRS)

Hodgkins, R. L.; Osgood, D. R.

1968-01-01

System, named Hydra, generates charts, graphs, and printed matter on slides or conventional negatives and positives, and combines these media with a capability of storage on magnetic tape for future updating to accommodate engineering changes or contract modifications to be readily added to basic data.

Social media: the way forward or a waste of time for physicians?

PubMed

DeCamp, M; Cunningham, A M

2013-01-01

Social media is everywhere; its use has grown exponentially over recent years. The prevalence of these outlets for communication raises some interesting and potentially risky issues for physicians. On the one hand, some believe that physicians should have a strong social media presence and can benefit greatly from access to a global community of peers and leaders through blogs, online forums, Facebook, Twitter and other communication channels. Dr Anne Marie Cunningham provides a strong case for the advantages of developing networks and figuring out who and what to pay attention to online. On the other hand however, others believe that the use of social media places doctors at a professional and ethical risk and is essentially a waste of time for the already time-pressured physician. Professor DeCamp argues that the risks of social media outweigh their benefits. It makes it more difficult to maintain a distinction between private and professional personas, and as we have seen, one mistyped or inappropriate comment can have potentially negative consequences when taken out of context. With an already time-pressured day, the priority should be patients, not tweets. Whatever your thoughts on the benefits and risks of social media, it is here to stay. Specific guidelines and guidance are needed to ensure that physicians who decide to join an online community reap the benefits of global communication, rather than regret it.

Study of basic computer competence among public health nurses in Taiwan.

PubMed

Yang, Kuei-Feng; Yu, Shu; Lin, Ming-Sheng; Hsu, Chia-Ling

2004-03-01

Rapid advances in information technology and media have made distance learning on the Internet possible. This new model of learning allows greater efficiency and flexibility in knowledge acquisition. Since basic computer competence is a prerequisite for this new learning model, this study was conducted to examine the basic computer competence of public health nurses in Taiwan and explore factors influencing computer competence. A national cross-sectional randomized study was conducted with 329 public health nurses. A questionnaire was used to collect data and was delivered by mail. Results indicate that basic computer competence of public health nurses in Taiwan is still needs to be improved (mean = 57.57 +- 2.83, total score range from 26-130). Among the five most frequently used software programs, nurses were most knowledgeable about Word and least knowledgeable about PowerPoint. Stepwise multiple regression analysis revealed eight variables (weekly number of hours spent online at home, weekly amount of time spent online at work, weekly frequency of computer use at work, previous computer training, computer at workplace and Internet access, job position, education level, and age) that significantly influenced computer competence, which accounted for 39.0 % of the variance. In conclusion, greater computer competence, broader educational programs regarding computer technology, and a greater emphasis on computers at work are necessary to increase the usefulness of distance learning via the Internet in Taiwan. Building a user-friendly environment is important in developing this new media model of learning for the future.

Reading About the Flu Online: How Health-Protective Behavioral Intentions Are Influenced by Media Multitasking, Polychronicity, and Strength of Health-Related Arguments.

PubMed

Kononova, Anastasia; Yuan, Shupei; Joo, Eunsin

2017-06-01

As health organizations increasingly use the Internet to communicate medical information and advice (Shortliffe et al., 2000; World Health Organization, 2013), studying factors that affect health information processing and health-protective behaviors becomes extremely important. The present research applied the elaboration likelihood model of persuasion to explore the effects of media multitasking, polychronicity (preference for multitasking), and strength of health-related arguments on health-protective behavioral intentions. Participants read an online article about influenza that included strong and weak suggestions to engage in flu-preventive behaviors. In one condition, participants read the article and checked Facebook; in another condition, they were exposed only to the article. Participants expressed greater health-protective behavioral intentions in the media multitasking condition than in the control condition. Strong arguments were found to elicit more positive behavioral intentions than weak arguments. Moderate and high polychronics showed greater behavioral intentions than low polychronics when they read the article in the multitasking condition. The difference in intentions to follow strong and weak arguments decreased for moderate and high polychronics. The results of the present study suggest that health communication practitioners should account for not only media use situations in which individuals typically read about health online but also individual differences in information processing, which puts more emphasis on the strength of health-protective suggestions when targeting light multitaskers.

Strongly localized dark modes in binary discrete media with cubic-quintic nonlinearity within the anti-continuum limit

NASA Astrophysics Data System (ADS)

Taib, L. Abdul; Hadi, M. S. Abdul; Umarov, B. A.

2017-12-01

The existence of dark strongly localized modes of binary discrete media with cubic-quintic nonlinearity is numerically demonstrated by solving the relevant discrete nonlinear Schrödinger equations. In the model, the coupling coefficients between adjacent sites are set to be relatively small representing the anti-continuum limit. In addition, approximated analytical solutions for vectorial solitons with various topologies are derived. Stability analysis of the localized states was performed using the standard linearized eigenfrequency problem. The prediction from the stability analysis are furthermore verified by direct numerical integrations.

A Huygens principle for diffusion and anomalous diffusion in spatially extended systems

PubMed Central

Gottwald, Georg A.; Melbourne, Ian

2013-01-01

We present a universal view on diffusive behavior in chaotic spatially extended systems for anisotropic and isotropic media. For anisotropic systems, strong chaos leads to diffusive behavior (Brownian motion with drift) and weak chaos leads to superdiffusive behavior (Lévy processes with drift). For isotropic systems, the drift term vanishes and strong chaos again leads to Brownian motion. We establish the existence of a nonlinear Huygens principle for weakly chaotic systems in isotropic media whereby the dynamics behaves diffusively in even space dimension and exhibits superdiffusive behavior in odd space dimensions. PMID:23653481

Propagation of elliptic-Gaussian beams in strongly nonlocal nonlinear media

NASA Astrophysics Data System (ADS)

Deng, Dongmei; Guo, Qi

2011-10-01

The propagation of the elliptic-Gaussian beams is studied in strongly nonlocal nonlinear media. The elliptic-Gaussian beams and elliptic-Gaussian vortex beams are obtained analytically and numerically. The patterns of the elegant Ince-Gaussian and the generalized Ince-Gaussian beams are varied periodically when the input power is equal to the critical power. The stability is verified by perturbing the initial beam by noise. By simulating the propagation of the elliptic-Gaussian beams in liquid crystal, we find that when the mode order is not big enough, there exists the quasi-elliptic-Gaussian soliton states.

Analytic expression and propagation properties of hollow Gaussian beams for the off-waist incident case in strongly nonlocal media

NASA Astrophysics Data System (ADS)

Dai, Zhiping; Ling, Xiaohui; Tang, Shiqing

2018-06-01

In this paper, the propagation properties of hollow Gaussian beams (HGBs) are discussed in detail when they are off-waist incident in strongly nonlocal media. A set of mathematic expressions are given to describe the evolutions of the beam intensity, the beam width, and the real beam radius. Numerical simulations are carried out to illustrate these propagation properties depended on the off-waist incidence. It is found that a HGB always periodically transforms its transverse patterns during propagation. Accordingly, the beam width and the real beam radius are also periodic during propagation.

Character Journaling through Social Networks: Exemplifying Tenets of the New Literacy Studies

ERIC Educational Resources Information Center

White, John Wesley; Hungerford-Kresser, Holly

2014-01-01

Countering reactionary attempts to ban social media from schools is a strong research based rationale for bringing social media into the literacy classroom. When used as a medium to explore literature--or more specifically for interactive character journaling--this medium exemplifies how meaning is created by individuals' interactions with…

Canaries in the Coal Mine: Perceptions of Threat and Media System Dependency Relations.

ERIC Educational Resources Information Center

Loges, William E.

1994-01-01

Investigates whether the intensity and scope of media system dependency (MSD) relations are positively related to perceptions of threats in the environment. Finds that higher perceptions of threat are associated with more intense MSD relations; threat perceptions are strong predictors of the intensity of MSD relations when demographic variables…

Social University Challenge: Constructing Pragmatic Graduate Competencies for Social Networking

ERIC Educational Resources Information Center

Benson, Vladlena; Morgan, Stephanie

2016-01-01

With the strong acceptance of social technologies by student users, the academic applications have swiftly followed, bringing a social dimension into every area of university life. However, there have been concerns raised about the impact of social media on students. Some Universities have started including social media skills training in the…

New insights on the complex dynamics of two-phase flow in porous media under intermediate-wet conditions.

PubMed

Rabbani, Harris Sajjad; Joekar-Niasar, Vahid; Pak, Tannaz; Shokri, Nima

2017-07-04

Multiphase flow in porous media is important in a number of environmental and industrial applications such as soil remediation, CO 2 sequestration, and enhanced oil recovery. Wetting properties control flow of immiscible fluids in porous media and fluids distribution in the pore space. In contrast to the strong and weak wet conditions, pore-scale physics of immiscible displacement under intermediate-wet conditions is less understood. This study reports the results of a series of two-dimensional high-resolution direct numerical simulations with the aim of understanding the pore-scale dynamics of two-phase immiscible fluid flow under intermediate-wet conditions. Our results show that for intermediate-wet porous media, pore geometry has a strong influence on interface dynamics, leading to co-existence of concave and convex interfaces. Intermediate wettability leads to various interfacial movements which are not identified under imbibition or drainage conditions. These pore-scale events significantly influence macro-scale flow behaviour causing the counter-intuitive decline in recovery of the defending fluid from weak imbibition to intermediate-wet conditions.

The Plain Rapper. Revised.

ERIC Educational Resources Information Center

New Hampshire Educational Media Association, Concord.

This is a guide to policies and procedures for instructional material selection and reconsideration for school media personnel. It includes the basic statements, interpretations, writings, and forms from national library and teacher organizations. A major section discusses legal precedents in the area of intellectual freedom, in addition to…

Basic Research Needs for Geosciences: Facilitating 21st Century Energy Systems

DOE Office of Scientific and Technical Information (OSTI.GOV)

DePaolo, D. J.; Orr, F. M.; Benson, S. M.

2007-06-01

To identify research areas in geosciences, such as behavior of multiphase fluid-solid systems on a variety of scales, chemical migration processes in geologic media, characterization of geologic systems, and modeling and simulation of geologic systems, needed for improved energy systems.

Growth in liquid or solid media.

PubMed

Elbing, K L; Brent, R

2001-05-01

This appendix presents basic procedures for growing overnight (and larger) cultures, monitoring growth, and titering and isolating bacterial cultures by serial dilution. In addition, protocols are provided for isolating single colonies by streaking and spreading a plate. Replica plating and strain storage/retrieval is also detailed.

Advertising Theory and Practice.

ERIC Educational Resources Information Center

Sandage, C. H.; Fryburger, Vernon

The social and economic functions of advertising, its role in business, how it works, and how it is planned and created are the subject of this textbook. Sections include basic values and functions, background for planning advertising strategy, the advertising message, advertising media, testing advertising effectiveness, and the advertising…

A plea for the use of drawing in human anatomy teaching.

PubMed

Clavert, Philippe; Bouchaïb, J; Duparc, F; Kahn, J L

2012-10-01

Descriptive human anatomy constitutes one of the main parts of the educational program of the first part of the medical studies. Professors of anatomy have to take into account the exponential evolution of the techniques of morphological and functional exploration of the patients, and the trend to open more and more the contents of the lectures of anatomy to clinical considerations. Basically, teaching requires a series of descriptive and educational media to set up, in front of the student, the studied structures and so to build the human body. More generally, lectures in morphological sciences try to develop three types of knowledge: declarative, procedural, and conditional. Traditionally in France "basic or first" anatomy is taught in amphitheater and in big groups by building each structure or region on a blackboard with colored chalk that allows a relief stake of certain structures and builds in two dimensions a three-dimensional organization. Actually, the blackboard is and stays for us an excellent media of non-verbal expression.

DOE Office of Scientific and Technical Information (OSTI.GOV)

Ertem, Mehmed Zahid; Suna, Yuki; Himeda, Yuichiro

Pentamethylcyclopentadienyl iridium (Cp*Ir) complexes with bidentate ligands consisting of a pyridine ring and an electron-rich diazole ring were prepared. Their catalytic activity towards CO 2 hydrogenation in 2.0 M KHCO 3 aqueous solutions (pH 8.5) at 50 °C, under 1.0 MPa CO 2/H 2 (1:1) have been reported as an alternative to photo- and electrochemical CO 2 reduction. Bidentate ligands incorporating an electron-rich diazole ring improved the catalytic performance of the Ir complexes compared to the bipyridine ligand. Complexes 2, 4 and 6, possessing both a hydroxy group and an uncoordinated NH group, which are proton-responsive and capable of generatingmore » pendent-bases in basic media, recorded high initial TOF values of 1300 h -1, 1550 h -1 and 2000 h -1, respectively. Here, spectroscopic and computational investigations revealed that the reversible deprotonation changes the electronic properties of the complexes and causes interactions between pendent base and substrate and/or solvent water molecules, resulting in the high catalytic performance in basic media.« less

The appeasement effect of a United Nations climate summit on the German public

NASA Astrophysics Data System (ADS)

Brüggemann, Michael; de Silva-Schmidt, Fenja; Hoppe, Imke; Arlt, Dorothee; Schmitt, Josephine B.

2017-11-01

The annual UN climate summits receive intense global media coverage, and as such could engage local publics around the world, stimulate debate and knowledge about climate politics, and, ultimately, mobilize people to combat climate change. Here we show that, in contrast to these hopes, although the German public were exposed to news about the 2015 Paris summit, they did not engage with it in a more active way. Comparing knowledge and attitudes before, during and after the summit using a three-wave online panel survey (quota sample, N = 1,121), we find that respondents learnt a few basic facts about the conference but they continue to lack basic background knowledge about climate policy. Trust in global climate policy increased a little, but citizens were less inclined to support a leading role for Germany in climate politics. Moreover, they were not more likely to engage personally in climate protection. These results suggest that this global media event had a modest appeasing rather than mobilizing effect.

THE COMMAND OF THE TREND: SOCIAL MEDIA AS A WEAPON IN THE INFORMATION AGE

DTIC Science & Technology

2017-06-01

and a bot network) based on the analysis within this case study . Table 3. ISIS Case Study Analysis Propaganda Narratives 1. ISIS is strong...get started with an interview and included me in a cyber think-tank for the study of ISIS activity on social media. Additionally, I am still... study demonstrates how social media is a tool for modern warfare in the information age. The report builds on analysis of three distinct topics

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The Military and the Media: A Need for Control.

DTIC Science & Technology

1983-06-09

have a military who doesn’t like the media, a lot; and a media, somewhat above all that, who are more than a little disdainful of the military. In...dimensions were anything less than a popular crusade or one where national survival was not obviously at stake. Censorship! . . . Strong words, and a little ...of the mendacities to which they were subjected: the death of a thousand bites; no big lies, just lots of little ones; the Five O’Clock Follies; the

A Radar-like Iron based Nanohybrid as an Efficient and Stable Electrocatalyst for Oxygen Reduction

DOE Office of Scientific and Technical Information (OSTI.GOV)

Zhong, X. Y.; Liu, Lin; Wang, Xinde

2014-05-21

The present study shows a design concept for fabricating Fe-PyNG hybrid via strong coupling between FePc and pyridine-N. The prominent features of the Fe-PyNG hybrid include high electrocatalytic activity, superior durability, and better performance than Pt/C toward ORR in alkaline media. These features potentially make Fe-PyNG an outstanding nonprecious metal cathode catalyst for fuel cells. The incorporation of Fe ion and pyridine-N afforded effective bonding and synergetic coupling effects, which lead to significant electrocatalytic performance. DFT calculations indicate that N-modified Fe is a superior site for OOH adsorption and ORR reaction. Meanwhile, the strong chemical bonding between FePc and pyridynemore » in PyNG leads to its superior stability. We believe that our present synthetic strategy can be further extended to develop other metal complexes/N-doped carbon materials for broad applications in the field of catalysts, batteries, and supercapacitors. This work was supported by National Basic Research Program of China (973 Program) (2013CB733501), the National Natural Science Foundation of China (NSFC-21306169, 21176221, 21136001 and 21101137), Zhejiang Provincial Natural Science Foundation of China (ZJNSF-R4110345) and the New Century Excellent Talents in University Program (NCET-10-0979). We thank Prof. Youqun Zhu for Instruments support. D. Mei is supported by the US Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences & Biosciences. Pacific Northwest National Laboratory (PNNL) is a multiprogram national laboratory operated for DOE by Battelle. Computing time was granted by the grand challenge of computational catalysis of the William R. Wiley Environmental Molecular Sciences Laboratory (EMSL). EMSL is a national scientific user facility located at Pacific Northwest National Laboratory (PNNL) and sponsored by DOE’s Office of Biological and Environmental Research.« less

Utilization of Porous Media for Condensing Heat Exchangers

NASA Technical Reports Server (NTRS)

Tuan, George C.

2006-01-01

The use of porous media as a mean of separating liquid condensate from the air stream in condensing heat exchangers has been explored in the past inside small plant growth chambers and in the Apollo Command Module. Both applications used a cooled porous media made of sintered stainless steel to cool and separate condensation from the air stream. However, the main issues with the utilization of porous media in the past have been the deterioration of the porous media over long duration, such as clogging and changes in surface wetting characteristics. In addition, for long duration usage, biofilm growth from microorganisms on the porous medial would also be an issue. In developing Porous Media Condensing Heat Exchangers (PMCHX) for future space applications, different porous materials and microbial growth control methods will need to be explored. This paper explores the work performed at JSC and GRC to evaluate different porous materials and microbial control methods to support the development of a Porous Media Condensing Heat Exchanger. It outlines the basic principles for designing a PMCHX and issues that were encountered and ways to resolve those issues. The PMCHX has potential of mass, volume, and power savings over current CHX and water separator technology and would be beneficial for long duration space missions.

A formative evaluation of social media campaign to reduce adolescent dating violence.

PubMed

Lambert, Danielle N; Bishop, Lauren E; Guetig, Stephanie; Frew, Paula M

2014-11-12

The Emory Jane Fonda Center implemented the Start Strong Atlanta social marketing campaign, "Keep It Strong ATL", in 2007 to promote the development of healthy adolescent relationships and to foster the prevention of adolescent dating abuse among 11-14 year olds. A formative evaluation was conducted to understand whether messages directed at the target audience were relevant to the program's relationship promotion and violence prevention goals, and whether the "Web 2.0" social media channels of communication (Facebook, Twitter, YouTube, Flickr, Tumblr, and Pinterest) were reaching the intended audience. Mixed methodologies included qualitative interviews and a key informant focus group, a cross-sectional survey, and web analytics. Qualitative data were analyzed using constant comparative methodology informed by grounded theory. Descriptive statistics were generated from survey data, and web analytics provided user information and traffic patterns. Results indicated that the Keep It Strong ATL social marketing campaign was a valuable community resource that had potential for broader scope and greater reach. The evaluation team learned the importance of reaching adolescents through Web 2.0 platforms, and the need for message dissemination via peers. Survey results indicated that Facebook (ranked 6.5 out of 8) was the highest rated social media outlet overall, and exhibited greatest appeal and most frequent visits, yet analytics revealed that only 3.5% of "likes" were from the target audience. These results indicate that the social media campaign is reaching predominantly women (76.5% of viewership) who are outside of the target age range of 11-14 years. While the social media campaign was successfully launched, the findings indicate the need for a more focused selection of communication channels, timing of media updates to maximize visibility, balancing message tone and delivery, and incorporating differentiated messaging for the target audiences. Collaboration with parents and community partners is also emphasized in order to expand the campaign's reach and create more channels to disseminate relationship promotion and dating violence prevention messaging to the intended audience.

Statistical investigation of simulated fed intestinal media composition on the equilibrium solubility of oral drugs.

PubMed

Zhou, Zhou; Dunn, Claire; Khadra, Ibrahim; Wilson, Clive G; Halbert, Gavin W

2017-03-01

Gastrointestinal fluid is a complex milieu and it is recognised that gut drug solubility is different to that observed in simple aqueous buffers. Simulated gastrointestinal media have been developed covering fasted and fed states to facilitate in vitro prediction of gut solubility and product dissolution. However, the combination of bile salts, phospholipids, fatty acids and proteins in an aqueous buffered system creates multiple phases and drug solubility is therefore a complex interaction between these components, which may create unique environments for each API. The impact on solubility can be assessed through a statistical design of experiment (DoE) approach, to determine the influence and relationships between factors. In this paper DoE has been applied to fed simulated gastrointestinal media consisting of eight components (pH, bile salt, lecithin, sodium oleate, monoglyceride, buffer, salt and pancreatin) using a two level D-optimal design with forty-four duplicate measurements and four centre points. The equilibrium solubility of a range of poorly soluble acidic (indomethacin, ibuprofen, phenytoin, valsartan, zafirlukast), basic (aprepitant, carvedilol, tadalafil, bromocriptine) and neutral (fenofibrate, felodipine, probucol, itraconazole) drugs was investigated. Results indicate that the DoE provides equilibrium solubility values that are comparable to literature results for other simulated fed gastrointestinal media systems or human intestinal fluid samples. For acidic drugs the influence of pH predominates but other significant factors related to oleate and bile salt or interactions between them are present. For basic drugs pH, oleate and bile salt have equal significance along with interactions between pH and oleate and lecithin and oleate. Neutral drugs show diverse effects of the media components particularly with regard to oleate, bile salt, pH and lecithin but the presence of monoglyceride, pancreatin and buffer have significant but smaller effects on solubility. There are fourteen significant interactions between factors mainly related to the surfactant components and pH, indicating that the solubility of neutral drugs in fed simulated media is complex. The results also indicate that the equilibrium solubility of each drug can exhibit individualistic behaviour associated with the drug's chemical structure, physicochemical properties and interaction with media components. The utility of DoE for fed simulated media has been demonstrated providing equilibrium solubility values comparable with similar in vitro systems whilst also providing greater information on the influence of media factors and their interactions. The determination of a drug's gastrointestinal solubility envelope provides useful limits that can potentially be applied to in silico modelling and in vivo experiments. Copyright © 2017 The Authors. Published by Elsevier B.V. All rights reserved.

Complexity and Productivity Differentiation Models of Metallogenic Indicator Elements in Rocks and Supergene Media Around Daijiazhuang Pb-Zn Deposit in Dangchang County, Gansu Province

DOE Office of Scientific and Technical Information (OSTI.GOV)

He, Jin-zhong, E-mail: viewsino@163.com; Yao, Shu-zhen; Zhang, Zhong-ping

2013-03-15

With the help of complexity indices, we quantitatively studied multifractals, frequency distributions, and linear and nonlinear characteristics of geochemical data for exploration of the Daijiazhuang Pb-Zn deposit. Furthermore, we derived productivity differentiation models of elements from thermodynamics and self-organized criticality of metallogenic systems. With respect to frequency distributions and multifractals, only Zn in rocks and most elements except Sb in secondary media, which had been derived mainly from weathering and alluviation, exhibit nonlinear distributions. The relations of productivity to concentrations of metallogenic elements and paragenic elements in rocks and those of elements strongly leached in secondary media can be seenmore » as linear addition of exponential functions with a characteristic weak chaos. The relations of associated elements such as Mo, Sb, and Hg in rocks and other elements in secondary media can be expressed as an exponential function, and the relations of one-phase self-organized geological or metallogenic processes can be represented by a power function, each representing secondary chaos or strong chaos. For secondary media, exploration data of most elements should be processed using nonlinear mathematical methods or should be transformed to linear distributions before processing using linear mathematical methods.« less

Real-time imaging through strongly scattering media: seeing through turbid media, instantly

PubMed Central

Sudarsanam, Sriram; Mathew, James; Panigrahi, Swapnesh; Fade, Julien; Alouini, Mehdi; Ramachandran, Hema

2016-01-01

Numerous everyday situations like navigation, medical imaging and rescue operations require viewing through optically inhomogeneous media. This is a challenging task as photons propagate predominantly diffusively (rather than ballistically) due to random multiple scattering off the inhomogenieties. Real-time imaging with ballistic light under continuous-wave illumination is even more challenging due to the extremely weak signal, necessitating voluminous data-processing. Here we report imaging through strongly scattering media in real-time and at rates several times the critical flicker frequency of the eye, so that motion is perceived as continuous. Two factors contributed to the speedup of more than three orders of magnitude over conventional techniques - the use of a simplified algorithm enabling processing of data on the fly, and the utilisation of task and data parallelization capabilities of typical desktop computers. The extreme simplicity of the technique, and its implementation with present day low-cost technology promises its utility in a variety of devices in maritime, aerospace, rail and road transport, in medical imaging and defence. It is of equal interest to the common man and adventure sportsperson like hikers, divers, mountaineers, who frequently encounter situations requiring realtime imaging through obscuring media. As a specific example, navigation under poor visibility is examined. PMID:27114106

Recovery of silica from electronic waste for the synthesis of cubic MCM-48 and its application in preparing ordered mesoporous carbon molecular sieves using a green approach

NASA Astrophysics Data System (ADS)

Liou, Tzong-Horng

2012-07-01

The electronics industry is one of the world's fastest growing manufacturing industries. However, e-waste has become a serious pollution problem. This study reports the recovery of e-waste for preparing valuable MCM-48 and ordered mesoporous carbon for the first time. Specifically, this study adopts an alkali-extracted method to obtain sodium silicate precursors from electronic packaging resin ash. The influence of synthesis variables such as gelation pH, neutral/cationic surfactant ratio, hydrothermal treatment temperature, and calcination temperature on the mesophase of MCM-48 materials is investigated. Experimental results confirm that well-ordered cubic MCM-48 materials were synthesized in strongly acidic and strongly basic media. The resulting mesoporous silica had a high surface area of 1,317 m2/g, mean pore size of about 3.0 nm, and a high purity of 99.87 wt%. Ordered mesoporous carbon with high surface area (1,715 m2/g) and uniform pore size of CMK-1 type was successfully prepared by impregnating MCM-48 template using the resin waste. The carbon structure was sensitive to the sulfuric acid concentration and carbonization temperature. Converting e-waste into MCM-48 materials not only eliminates the disposal problem of e-waste, but also transforms industrial waste into a useful nanomaterial.

High speed bus technology development

NASA Astrophysics Data System (ADS)

Modrow, Marlan B.; Hatfield, Donald W.

1989-09-01

The development and demonstration of the High Speed Data Bus system, a 50 Million bits per second (Mbps) local data network intended for avionics applications in advanced military aircraft is described. The Advanced System Avionics (ASA)/PAVE PILLAR program provided the avionics architecture concept and basic requirements. Designs for wire and fiber optic media were produced and hardware demonstrations were performed. An efficient, robust token-passing protocol was developed and partially demonstrated. The requirements specifications, the trade-offs made, and the resulting designs for both a coaxial wire media system and a fiber optics design are examined. Also, the development of a message-oriented media access protocol is described, from requirements definition through analysis, simulation and experimentation. Finally, the testing and demonstrations conducted on the breadboard and brassboard hardware is presented.

Recent Cooperative Research Activities of HDD and Flexible Media Transport Technologies in Japan

NASA Astrophysics Data System (ADS)

Ono, Kyosuke

This paper presents the recent status of industry-university cooperative research activities in Japan on the mechatronics of information storage and input/output equipment. There are three research committees for promoting information exchange on technical problems and research topics of head-disk interface in hard disk drives (HDD), flexible media transport and image printing processes which are supported by the Japan Society of Mechanical Engineering (JSME), the Japanese Society of Tribologists (JAST) and the Japan Society of Precision Engineering (JSPE). For hard disk drive technology, the Storage Research Consortium (SRC) is supporting more than 40 research groups in various different universities to perform basic research for future HDD technology. The past and present statuses of these activities are introduced, particularly focusing on HDD and flexible media transport mechanisms.

The Role of Parents' Critical Thinking About Media in Shaping Expectancies, Efficacy and Nutrition Behaviors for Families.

PubMed

Austin, Erica Weintraub; Pinkleton, Bruce E; Radanielina-Hita, Marie Louise; Ran, Weina

2015-01-01

A convenience survey completed online by 137 4-H parents in Washington state explored their orientation toward critical thinking regarding media sources and content and its implications for family dietary behaviors. Parents' critical thinking toward media sources predicted their information efficacy about content. Critical thinking toward media content predicted information efficacy about sources, expectancies for parental mediation, and expectancies for family receptiveness to lower-fat dietary changes. Expectancies for receptiveness to dietary changes and expectancies for parental mediation predicted efficacy for implementing healthy dietary practices; this strongly predicted healthy dietary practices. Media-related critical thinking, therefore, indirectly but consistently affected self-reported family dietary behaviors through its effects on efficacy for managing media and expectancies for the family's receptiveness to healthy dietary changes. The results suggest parents' media literacy skills affect their family's dietary behavior. Health campaigns that help parents interpret and manage the media environment may benefit all family members.

Concurrent and prospective analyses of peer, television and social media influences on body dissatisfaction, eating disorder symptoms and life satisfaction in adolescent girls.

PubMed

Ferguson, Christopher J; Muñoz, Mónica E; Garza, Adolfo; Galindo, Mariza

2014-01-01

The degree to which media contributes to body dissatisfaction, life satisfaction and eating disorder symptoms in teenage girls continues to be debated. The current study examines television, social media and peer competition influences on body dissatisfaction, eating disorder symptoms and life satisfaction in a sample of 237 mostly Hispanic girls. 101 of these girls were reassessed in a later 6-month follow-up. Neither television exposure to thin ideal media nor social media predicted negative outcomes either concurrently nor prospectively with the exception of a small concurrent correlation between social media use and life satisfaction. Social media use was found to contribute to later peer competition in prospective analysis, however, suggesting potential indirect but not direct effects on body related outcomes. Peer competition proved to be a moderate strong predictor of negative outcomes both concurrently and prospectively. It is concluded that the negative influences of social comparison are focused on peers rather than television or social media exposure.

Media and growth conditions for induction of secondary metabolite production.

PubMed

Frisvad, Jens C

2012-01-01

Growth media and incubation conditions have a very strong influence of secondary metabolite production. There is no consensus on which media are the optimal for metabolite production, but a series of useful and effective media and incubation conditions have been listed here. Chemically well-defined media are suited for biochemical studies, but in order to get chemical diversity expressed in filamentous fungi, sources rich in amino acids, vitamins, and trace metals have to be added, such as yeast extract and oatmeal. A battery of solid agar media is recommended for exploration of chemical diversity as agar plug samples are easily analyzed to get an optimal representation of the qualitative secondary metabolome. Standard incubation for a week at 25°C in darkness is recommended, but optimal conditions have to be modified depending on the ecology and physiology of different filamentous fungi.

Concepts, Terms, and Mental Models: Everyday Challenges to Older Adult Social Media Adoption.

PubMed

Quinn, Kelly; Smith-Ray, Renae; Boulter, Kristin

2016-07-01

Social connection and social support are strong predictors of wellbeing, but maintaining social relations often becomes more difficult at older ages. Because social media enhance feelings of connectedness and reduce feelings of loneliness, they may present accessible and relatively low cost mechanisms to enhance life quality at older ages. Using data gathered from two focus groups of potential older adult social media learners, we explored the physical and cognitive challenges to social media use, perceptions of social media benefits, and conceptual barriers to use. Findings support earlier studies that identify perceived benefit as important to social media adoption at older ages, and extend these by identifying that a lack in conceptual knowledge of these technologies is an additional barrier to use. We then discuss the cognitive implications of gaining this knowledge.

Concepts, Terms, and Mental Models: Everyday Challenges to Older Adult Social Media Adoption

PubMed Central

Smith-Ray, Renae; Boulter, Kristin

2017-01-01

Social connection and social support are strong predictors of wellbeing, but maintaining social relations often becomes more difficult at older ages. Because social media enhance feelings of connectedness and reduce feelings of loneliness, they may present accessible and relatively low cost mechanisms to enhance life quality at older ages. Using data gathered from two focus groups of potential older adult social media learners, we explored the physical and cognitive challenges to social media use, perceptions of social media benefits, and conceptual barriers to use. Findings support earlier studies that identify perceived benefit as important to social media adoption at older ages, and extend these by identifying that a lack in conceptual knowledge of these technologies is an additional barrier to use. We then discuss the cognitive implications of gaining this knowledge. PMID:28990010

Understanding and Changing Older Adults’ Perceptions and Learning of Social Media

PubMed Central

Xie, Bo; Watkins, Ivan; Golbeck, Jen; Huang, Man

2011-01-01

An exploratory study was conducted to answer the following questions: What are older adults’ perceptions of social media? What educational strategies can facilitate their learning of social media? A thematic map was developed to illustrate changing perceptions from the initial unanimous, strong negative to the more positive but cautious and to the eventual willingness to actually contribute content. Privacy was the primary concern and key perceptual barrier to adoption. Effective educational strategies were developed to overcome privacy concerns, including: 1) introducing the concepts before introducing the functions; 2) responding to privacy concerns; and 3) making social media personally relevant. PMID:22639483

Light-sheet generation in inhomogeneous media using self-reconstructing beams and the STED-principle.

PubMed

Gohn-Kreuz, Cristian; Rohrbach, Alexander

2016-03-21

Self-reconstruction of Bessel beams in inhomogeneous media is beneficial in light-sheet based microscopy. Although the beam's ring system enables propagation stability, the resulting image contrast is reduced. Here, we show that by a combination of two self-reconstructing beams with different orbital angular momenta it is possible to inhibit fluorescence from the ring system by using stimulated emission depletion (STED) even in strongly scattering media. Our theoretical study shows that the remaining fluorescence γ depends non-linearly on the beams' relative radial and orbital angular momenta. For various scattering media we demonstrate that γ remains remarkably stable over long beam propagation distances.

Media exposure and marijuana and alcohol use among adolescents.

PubMed

Primack, Brian A; Kraemer, Kevin L; Fine, Michael J; Dalton, Madeline A

2009-01-01

We aimed to determine which media exposures are most strongly associated with marijuana and alcohol use among adolescents. In 2004, we surveyed 1,211 students at a large high school in suburban Pittsburgh regarding substance use, exposure to entertainment media, and covariates. Of the respondents, 52% were female, 8% were non-White, 27% reported smoking marijuana, and 60% reported using alcohol. They reported average exposure to 8.6 hr of media daily. In adjusted models, exposure to music was independently associated with marijuana use, but exposure to movies was independently associated with alcohol use. Implications, limitations, and suggestions for further research are discussed.

Media Exposure and Marijuana and Alcohol Use Among Adolescents

PubMed Central

PRIMACK, BRIAN A.; KRAEMER, KEVIN L.; FINE, MICHAEL J.; DALTON, MADELINE A.

2010-01-01

We aimed to determine which media exposures are most strongly associated with marijuana and alcohol use among adolescents. In 2004, we surveyed 1,211 students at a large high school in suburban Pittsburgh regarding substance use, exposure to entertainment media, and covariates. Of the respondents, 52% were female, 8% were non-White, 27% reported smoking marijuana, and 60% reported using alcohol. They reported average exposure to 8.6 hr of media daily. In adjusted models, exposure to music was independently associated with marijuana use, but exposure to movies was independently associated with alcohol use. Implications, limitations, and suggestions for further research are discussed. PMID:19306219

Basic nonlinear acoustics: an introduction for radiological physicists.

PubMed

Harpen, Michael D

2006-09-01

Presented is a brief introduction to nonlinear acoustics, a topic of increasing importance in modern diagnostic ultrasound. Specifically treated is shock wave and harmonic production in lossless media. We also present a description of linear attenuation mechanisms in soft tissue and finally nonlinear propagation in soft tissue.

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The Courts and the News Media.

ERIC Educational Resources Information Center

Pickerell, Albert G.; Lipman, Michel

This book is intended to provide reporters who cover court proceedings with a basic knowledge of the organization of California's courts and of the procedures they follow. It contains: material about court organization and jurisdiction, pretrial civil procedure, pretrial criminal procedure, and civil and criminal trial procedure; a legal…

Coping with Copyright. Second Edition.

ERIC Educational Resources Information Center

Merriam, Elizabeth B.; And Others

Intended to help librarians, library media specialists, administrators, and educators better understand the ramifications of the copyright law, Public Law 94-553, this document asks and answers some of the basic questions concerning compliance with the law. Topics covered include definition of the copyright law; scope of copyright protection;…

Basic Research in Information Science in France.

ERIC Educational Resources Information Center

Chambaud, S.; Le Coadic, Y. F.

1987-01-01

Discusses the goals of French academic research policy in the field of information science, emphasizing the interdisciplinary nature of the field. Areas of research highlighted include communication, telecommunications, co-word analysis in scientific and technical documents, media, and statistical methods for the study of social sciences. (LRW)

25 CFR 36.40 - Standard XIII-Library/media program.

Code of Federal Regulations, 2011 CFR

2011-04-01

... Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR EDUCATION MINIMUM ACADEMIC STANDARDS FOR THE BASIC EDUCATION OF INDIAN CHILDREN AND NATIONAL CRITERIA FOR DORMITORY SITUATIONS Instructional Support... inclusive of materials located in the classrooms shall be maintained. This category includes some of each of...

Feminism, Communication and the Politics of Knowledge.

ERIC Educational Resources Information Center

Gallagher, Margaret

Recent retrieval of pre-nineteenth century feminist thought provides a telling lesson in the politics of knowledge creation and control. From a feminist perspective, very little research carried out within the critical research paradigm questions the "basic assumptions, conventional wisdom, media myths and the accepted way of doing…

A Content Analysis of Visuals Used in Print Media Advertising.

ERIC Educational Resources Information Center

Moriarty, Sandra E.

1987-01-01

Provides a content analysis of advertising visuals--illustrations and photographs--to determine the frequency with which the basic visual communication functions are used. Finds that photographs are the most frequently used type of visual and that symbolic visuals are more prevalent than literal visuals. (MM)

School Library Certification Requirements: 1978 Update

ERIC Educational Resources Information Center

Franklin, Ann Y.

1978-01-01

State certification requirements are listed for school librarians and media specialists. Two charts are included for comparision and study: the first delineates basic core courses or subject areas as required by states, and the second gives certificate information, number of hours required, audiovisual education information, and the accreditation…

Formative Research in Educational Media.

ERIC Educational Resources Information Center

Hodapp, Timothy

This paper distinguishes between basic research, applied research, and evaluation. Evaluation is broken down into two types: summative and formative. The limitations of formative research are presented, followed by a discussion of the value of the formative researcher participating in the product planning process. The types of data which formative…

Planning and Producing Audiovisual Materials.

ERIC Educational Resources Information Center

Kemp, Jerrold E.

The first few chapters of this book are devoted to an examination of the changing character of audiovisual materials; instructional design and the selection of media to serve specific objectives; and principles of perception, communication, and learning. Relevant research findings in the field are reviewed. The basic techniques of planning…

MediaNet: a multimedia information network for knowledge representation

NASA Astrophysics Data System (ADS)

Benitez, Ana B.; Smith, John R.; Chang, Shih-Fu

2000-10-01

In this paper, we present MediaNet, which is a knowledge representation framework that uses multimedia content for representing semantic and perceptual information. The main components of MediaNet include conceptual entities, which correspond to real world objects, and relationships among concepts. MediaNet allows the concepts and relationships to be defined or exemplified by multimedia content such as images, video, audio, graphics, and text. MediaNet models the traditional relationship types such as generalization and aggregation but adds additional functionality by modeling perceptual relationships based on feature similarity. For example, MediaNet allows a concept such as car to be defined as a type of a transportation vehicle, but which is further defined and illustrated through example images, videos and sounds of cars. In constructing the MediaNet framework, we have built on the basic principles of semiotics and semantic networks in addition to utilizing the audio-visual content description framework being developed as part of the MPEG-7 multimedia content description standard. By integrating both conceptual and perceptual representations of knowledge, MediaNet has potential to impact a broad range of applications that deal with multimedia content at the semantic and perceptual levels. In particular, we have found that MediaNet can improve the performance of multimedia retrieval applications by using query expansion, refinement and translation across multiple content modalities. In this paper, we report on experiments that use MediaNet in searching for images. We construct the MediaNet knowledge base using both WordNet and an image network built from multiple example images and extracted color and texture descriptors. Initial experimental results demonstrate improved retrieval effectiveness using MediaNet in a content-based retrieval system.

Panel 4: Report of the Microbiology Panel

PubMed Central

Barenkamp, Stephen J.; Chonmaitree, Tasnee; Hakansson, Anders P.; Heikkinen, Terho; King, Samantha; Nokso-Koivisto, Johanna; Novotny, Laura A.; Patel, Janak A.; Pettigrew, Melinda; Swords, W. Edward

2017-01-01

Objective To perform a comprehensive review of the literature from July 2011 until June 2015 on the virology and bacteriology of otitis media in children. Data Sources PubMed database of the National Library of Medicine. Review Methods Two subpanels comprising experts in the virology and bacteriology of otitis media were created. Each panel reviewed the relevant literature in the fields of virology and bacteriology and generated draft reviews. These initial reviews were distributed to all panel members prior to meeting together at the Post-symposium Research Conference of the 18th International Symposium on Recent Advances in Otitis Media, National Harbor, Maryland, in June 2015. A final draft was created, circulated, and approved by all panel members. Conclusions Excellent progress has been made in the past 4 years in advancing our understanding of the microbiology of otitis media. Numerous advances were made in basic laboratory studies, in animal models of otitis media, in better understanding the epidemiology of disease, and in clinical practice. Implications for Practice (1) Many viruses cause acute otitis media without bacterial coinfection, and such cases do not require antibiotic treatment. (2) When respiratory syncytial virus, metapneumovirus, and influenza virus peak in the community, practitioners can expect to see an increase in clinical otitis media cases. (3) Biomarkers that predict which children with upper respiratory tract infections will develop otitis media may be available in the future. (4) Compounds that target newly identified bacterial virulence determinants may be available as future treatment options for children with otitis media. PMID:28372529

Panel 4: Report of the Microbiology Panel.

PubMed

Barenkamp, Stephen J; Chonmaitree, Tasnee; Hakansson, Anders P; Heikkinen, Terho; King, Samantha; Nokso-Koivisto, Johanna; Novotny, Laura A; Patel, Janak A; Pettigrew, Melinda; Swords, W Edward

2017-04-01

Objective To perform a comprehensive review of the literature from July 2011 until June 2015 on the virology and bacteriology of otitis media in children. Data Sources PubMed database of the National Library of Medicine. Review Methods Two subpanels comprising experts in the virology and bacteriology of otitis media were created. Each panel reviewed the relevant literature in the fields of virology and bacteriology and generated draft reviews. These initial reviews were distributed to all panel members prior to meeting together at the Post-symposium Research Conference of the 18th International Symposium on Recent Advances in Otitis Media, National Harbor, Maryland, in June 2015. A final draft was created, circulated, and approved by all panel members. Conclusions Excellent progress has been made in the past 4 years in advancing our understanding of the microbiology of otitis media. Numerous advances were made in basic laboratory studies, in animal models of otitis media, in better understanding the epidemiology of disease, and in clinical practice. Implications for Practice (1) Many viruses cause acute otitis media without bacterial coinfection, and such cases do not require antibiotic treatment. (2) When respiratory syncytial virus, metapneumovirus, and influenza virus peak in the community, practitioners can expect to see an increase in clinical otitis media cases. (3) Biomarkers that predict which children with upper respiratory tract infections will develop otitis media may be available in the future. (4) Compounds that target newly identified bacterial virulence determinants may be available as future treatment options for children with otitis media.

Basic Workplace Skills: The Foundation for Productivity Improvement. Workforce Brief #4.

ERIC Educational Resources Information Center

Bergman, Terri

Studies have confirmed that there is a strong correlation between employees' levels of basic workplace skills and their productivity in the workplace. Programs to build basic workplace skills have been shown to yield the following positive results: more instances of employees using reading and writing on the job, higher employee participation in…

Communicative Development in Twins with Discordant Histories of Recurrent Otitis Media.

ERIC Educational Resources Information Center

Hemmer, Virginia Hoey; Ratner, Nan Bernstein

1994-01-01

The communicative abilities of six sets of same-sex, preschool dizygotic twins were examined. In each dyad, one sibling had a strong history of recurrent otitis media (ROM) but the other twin did not. History of ROM was associated with lowered receptive vocabulary, with no consistent effects detected in expressive speech and language tasks.…

Spatiotemporal Airy Ince-Gaussian wave packets in strongly nonlocal nonlinear media.

PubMed

Peng, Xi; Zhuang, Jingli; Peng, Yulian; Li, DongDong; Zhang, Liping; Chen, Xingyu; Zhao, Fang; Deng, Dongmei

2018-03-08

The self-accelerating Airy Ince-Gaussian (AiIG) and Airy helical Ince-Gaussian (AihIG) wave packets in strongly nonlocal nonlinear media (SNNM) are obtained by solving the strongly nonlocal nonlinear Schrödinger equation. For the first time, the propagation properties of three dimensional localized AiIG and AihIG breathers and solitons in the SNNM are demonstrated, these spatiotemporal wave packets maintain the self-accelerating and approximately non-dispersion properties in temporal dimension, periodically oscillating (breather state) or steady (soliton state) in spatial dimension. In particular, their numerical experiments of spatial intensity distribution, numerical simulations of spatiotemporal distribution, as well as the transverse energy flow and the angular momentum in SNNM are presented. Typical examples of the obtained solutions are based on the ratio between the input power and the critical power, the ellipticity and the strong nonlocality parameter. The comparisons of analytical solutions with numerical simulations and numerical experiments of the AiIG and AihIG optical solitons show that the numerical results agree well with the analytical solutions in the case of strong nonlocality.

In the Margins: The Impact of Sexualised Images on the Mental Health of Ageing Women.

PubMed

Hine, Rochelle

2011-10-01

This paper describes key findings of a study exploring how a cohort of 16 rural Australian women aged over 60 years think, feel and respond to the prevalence of sexualised imagery in the media. The qualitative research framework was informed by Feminist Standpoint Theory. Participants in three focus groups responded to semi-structured questions and prompts, interspersed with viewing examples of sexualised images. Five strong thematic categories emerged: concern for the harmful impacts of sexualised images on the vulnerable, the media's portrayal of sexual content with a focus on physical appearance and youth, descriptions of the impact of viewing sexualised images, moderators of the impact of sexualised images on well-being, and marginalisation of women in the media. Findings from this research indicate that sexualised images in the media do have an impact on older women's self image and mental health in numerous ways and in a range of situations. Emotional impacts included sadness, anger, concern, envy, desensitisation, marginalisation, and discomfort that their appearance was being judged by others. A strong sense of self apart from appearance, feeling valued by family and community, ignoring or overlooking media content, and being aware that media images are not real and attainable helped buffer the link between sexualised images and well-being. Another important finding is that the impact is variable: women may experience different responses to similar sexualised content depending on a range of social, health and lifestyle factors affecting them at any given time.

Characterization of the basic charge variants of a human IgG1

PubMed Central

Lu, Franklin; Derfus, Gayle; Kluck, Brian; Nogal, Bartek; Emery, Craig; Summers, Christie; Zheng, Kai; Bayer, Robert; Amanullah, Ashraf

2011-01-01

We report a case study of an IgG1 with a unique basic charge variant profile caused by C-terminal proline amidation on either one or two heavy chains. The proline amidation was sensitive to copper ion concentration in the production media during cell culture: the higher the Cu2+ ion concentration, the higher the level of proline amidation detected. This conclusion was supported by the analysis of samples that revealed direct correlation between the proline amidation level observed from peptide maps and the level of basic peaks measured by imaged capillary isoelectric focusing and a pH gradient ion-exchange chromatography method. The importance of these observations to therapeutic antibody production is discussed. PMID:22123059

Focusing light through strongly scattering media using genetic algorithm with SBR discriminant

NASA Astrophysics Data System (ADS)

Zhang, Bin; Zhang, Zhenfeng; Feng, Qi; Liu, Zhipeng; Lin, Chengyou; Ding, Yingchun

2018-02-01

In this paper, we have experimentally demonstrated light focusing through strongly scattering media by performing binary amplitude optimization with a genetic algorithm. In the experiments, we control 160 000 mirrors of digital micromirror device to modulate and optimize the light transmission paths in the strongly scattering media. We replace the universal target-position-intensity (TPI) discriminant with signal-to-background ratio (SBR) discriminant in genetic algorithm. With 400 incident segments, a relative enhancement value of 17.5% with a ground glass diffuser is achieved, which is higher than the theoretical value of 1/(2π )≈ 15.9 % for binary amplitude optimization. According to our repetitive experiments, we conclude that, with the same segment number, the enhancement for the SBR discriminant is always higher than that for the TPI discriminant, which results from the background-weakening effect of SBR discriminant. In addition, with the SBR discriminant, the diameters of the focus can be changed ranging from 7 to 70 μm at arbitrary positions. Besides, multiple foci with high enhancement are obtained. Our work provides a meaningful reference for the study of binary amplitude optimization in the wavefront shaping field.

Analogy Mapping Development for Learning Programming

NASA Astrophysics Data System (ADS)

Sukamto, R. A.; Prabawa, H. W.; Kurniawati, S.

2017-02-01

Programming skill is an important skill for computer science students, whereas nowadays, there many computer science students are lack of skills and information technology knowledges in Indonesia. This is contrary with the implementation of the ASEAN Economic Community (AEC) since the end of 2015 which is the qualified worker needed. This study provided an effort for nailing programming skills by mapping program code to visual analogies as learning media. The developed media was based on state machine and compiler principle and was implemented in C programming language. The state of every basic condition in programming were successful determined as analogy visualization.

Development of media for dynamic latent heat storage for the low-temperature range. Part 1: Thermal analyses of selected salt hydrate systems

NASA Technical Reports Server (NTRS)

Kanwischer, H.; Tamme, R.

1985-01-01

Phase change temperatures and phase change enthalpies of seventeen salt hydrates, three double salts, and four eutectics were measured thermodynamically and the results reported herein. Good results were obtained, especially for congruently melting salt hydrates. Incongruently melting salt hydrates appear less suitable for heat storage applications. The influence of the second phase - water, acid and hydroxide - to the latent heat is described. From these results, basic values of the working temperatures and storage capabilities of various storage media compositions may be derived.

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Enhanced Basicity of Push-Pull Nitrogen Bases in the Gas Phase.

PubMed

Raczyńska, Ewa D; Gal, Jean-François; Maria, Pierre-Charles

2016-11-23

Nitrogen bases containing one or more pushing amino-group(s) directly linked to a pulling cyano, imino, or phosphoimino group, as well as those in which the pushing and pulling moieties are separated by a conjugated spacer (C═X) n , where X is CH or N, display an exceptionally strong basicity. The n-π conjugation between the pushing and pulling groups in such systems lowers the basicity of the pushing amino-group(s) and increases the basicity of the pulling cyano, imino, or phosphoimino group. In the gas phase, most of the so-called push-pull nitrogen bases exhibit a very high basicity. This paper presents an analysis of the exceptional gas-phase basicity, mostly in terms of experimental data, in relation with structure and conjugation of various subfamilies of push-pull nitrogen bases: nitriles, azoles, azines, amidines, guanidines, vinamidines, biguanides, and phosphazenes. The strong basicity of biomolecules containing a push-pull nitrogen substructure, such as bioamines, amino acids, and peptides containing push-pull side chains, nucleobases, and their nucleosides and nucleotides, is also analyzed. Progress and perspectives of experimental determinations of GBs and PAs of highly basic compounds, termed as "superbases", are presented and benchmarked on the basis of theoretical calculations on existing or hypothetical molecules.

WA47 Tweets, hashtags and palliative care: a workshop for social media newbies looking to join the digital revolution.

PubMed

Noonan, Kerrie

2015-04-01

: A recent article in the BMJ highlighted the role of social media has in changing the way we talk about and respond to death and dying. There are so many social media channels do you know which ones are best for communicating about your work? for networking with peers? participating in journal clubs? disseminating research with the international community? What about your local community- how do you increase engagement online to promote your work and events? How can you use social media to source and access interesting content and information about the public health approach? This workshop is designed as a beginner level and new user workshop and is suitable for anyone wanting to be more active in social media. It is designed specifically to focus on social media in relation to the end of life, palliative care and death care online communities. Bring your social media device - your phone, ipad or computer and we will do the following: login and practice communicating with other users develop and implement basic social media goals apply strategies to increase your engagement and effectiveness on social media learn simple ways to measure your reach. Workshop participants will have an opportunity to build confidence and be more effective communicators in social media. You then get to practice your newly learned skills for the remainder of the PHPC Conference. © 2015, Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

Media exposure in children one hundred miles from a terrorist bombing.

PubMed

Pfefferbaum, Betty; Seale, Thomas W; Brandt, Edward N; Pfefferbaum, Rose L; Doughty, Debby E; Rainwater, Scott M

2003-03-01

This study assessed indirect interpersonal exposure to the 1995 Oklahoma City bombing, broadcast and print media exposure in the aftermath of the explosion, emotional reactions to media coverage, and posttraumatic stress reactions in children distant from the explosion. A survey was administered to 88 sixth-grade students in the public middle school in a community 100 miles from Oklahoma City 2 years after the bombing. Many children reported indirect interpersonal exposure and most reported bomb-related media exposure. Print media exposure was more strongly associated with enduring posttraumatic stress than broadcast exposure. Indirect interpersonal exposure and the interaction of media exposure with emotional reaction to media coverage in the aftermath of the explosion each predicted ongoing posttraumatic stress. The results suggest that children may have lingering reactions to highly publicized terrorist incidents. Concern about the influence of television viewing has long been proclaimed. This study implicates print media exposure as well. Media exposure to terrorist incidents, therefore, should be monitored and those working with children should assess exposure and stress even in children not directly impacted.

News and social media: windows into community perspectives on disinvestment.

PubMed

Street, Jackie M; Hennessy, Sophie E; Watt, Amber M; Hiller, Janet E; Elshaug, Adam G

2011-10-01

The aim of this study, in the context of disinvestment related health technology assessment, is to examine whether analysis of Web 2.0--commercial media output, blogs, and discussion forums--can provide an understanding of media framing, community perspectives, and the sociopolitical aspects of an entrenched technology. Thematic analysis of relevant data from fifty-nine media articles, thirty-nine discussion forums, thirteen blogs, and three Facebook pages relating to our case study: public funding for assisted reproductive technology services. Mainstream media and community-based social media responses were compared. Media responses were narrow, primarily describing emotive individual narratives or the political nexus of interests. Community (including patient) responses were broader including discussion of opportunity cost and vested interests but mostly reflected the polar ends of the debate, diverging strongly for or against disinvestment from public funding. Web2.0 and media analysis offers an inexpensive method to capture media portrayal, divergent community responses both to that portrayal and independent of it, and insight into the sociopolitical aspects of an entrenched technology undergoing disinvestment debate.

CENTCOM > VISITORS AND PERSONNEL > EMERGENCY PREPAREDNESS

Science.gov Websites

VISITORS AND PERSONNEL FAMILY CENTER FAMILY READINESS CENTCOM WEBMAIL SOCIAL MEDIA SECURITY ACCOUNTABILITY chemicals/materials, etc.). This site offers basic information regarding personal and family preparedness preparedness. To aid in making personal and family preparedness plans, there are many resources available to

Financial Literacy of Freshmen Business School Students

ERIC Educational Resources Information Center

Rosacker, Kirsten M.; Ragothaman, Srini; Gillispie, Michael

2009-01-01

In recent years, financial literacy has increasingly captured the attention of the banking and financial industries, policy makers, government agencies, public interest groups, and members of the news media. These interested parties are concerned that consumers lack the basic skills required to make decisions beneficial to their economic welfare.…

Qualitative Analysis of the Barriers College Students with Disabilities Experience in Higher Education

ERIC Educational Resources Information Center

Hong, Barbara S. S.

2015-01-01

Students with disabilities are increasingly enrolling in colleges and universities. However, many institutions are still unprepared to support them beyond the basic federal mandate of equal access and reasonable accommodations. This qualitative study utilized a nontraditional media of reflective journaling to capture the anecdotal experiences of…

The Parallel Globe: A Powerful Instrument to Perform Investigations of Earth's Illumination

ERIC Educational Resources Information Center

Rossi, Sabrina; Giordano, Enrica; Lanciano, Nicoletta

2015-01-01

Many researchers have documented the difficulties for learners of different ages and preparations in understanding basic astronomical concepts. Traditional instructional strategies and communication media do not seem to be effective in producing meaningful understanding, or even induce misconceptions and misinterpretations. In line with recent…

Increasing Student Learning through Multimedia Projects.

ERIC Educational Resources Information Center

Simkins, Michael; Cole, Karen; Tavalin, Fern; Means, Barbara

This book discusses enhancing student achievement through project-based learning with multimedia. Chapter 1 describes project-based multimedia learning. Chapter 2 presents a multimedia primer, including the five basic types of media objects (i.e., images, text, sound, motion, and interactivity). Chapter 3 addresses making a real-world connection,…

78 FR 64213 - Information Collection Being Reviewed by the Federal Communications Commission

Federal Register 2010, 2011, 2012, 2013, 2014

2013-10-28

....1621, Equipment Compatibility Offer; Section 76.1622, Consumer Education of Equipment Compatibility... Commission, Media Bureau, Washington, DC 20554, and should include the name of the cable operator to whom the... on encryption of the basic service tier. This rule change allows all- digital cable operators to...

Economic Issues in Mass Communication Industries.

ERIC Educational Resources Information Center

Rosse, James N.; Dertouzos, James N.

A general discussion covering both the common problems and features of the full range of the mass media industries, and some economic notions central to understanding them, opens this report, followed by introductory essays for individual industries and consideration of public policy issues. The basic economic considerations common to the field…

Graphics Specialist, 6-1. Military Curriculum Materials for Vocational and Technical Education.

ERIC Educational Resources Information Center

Ohio State Univ., Columbus. National Center for Research in Vocational Education.

This military-developed text consists of five volumes of instructional materials for use in training graphics specialists. Covered in the individual volumes are the following topics: fundamentals of graphics (graphic equipment and material, fundamentals of lettering, and techniques of line and tone media); applied basic drafting techniques…

Fatherless America: Confronting Our Most Urgent Social Problem.

ERIC Educational Resources Information Center

Blankenhorn, David

The United States is rapidly becoming a fatherless society. Fatherlessness is the leading cause of declining child well-being, providing the impetus behind social problems such as crime, domestic violence, and adolescent pregnancy. Challenging the basic assumptions of opinion leaders in academia and in the media, this book debunks the prevailing…

Monitoring the informational efficiency of European corporate bond markets with dynamical permutation min-entropy

NASA Astrophysics Data System (ADS)

Zunino, Luciano; Bariviera, Aurelio F.; Guercio, M. Belén; Martinez, Lisana B.; Rosso, Osvaldo A.

2016-08-01

In this paper the permutation min-entropy has been implemented to unveil the presence of temporal structures in the daily values of European corporate bond indices from April 2001 to August 2015. More precisely, the informational efficiency evolution of the prices of fifteen sectorial indices has been carefully studied by estimating this information-theory-derived symbolic tool over a sliding time window. Such a dynamical analysis makes possible to obtain relevant conclusions about the effect that the 2008 credit crisis has had on the different European corporate bond sectors. It is found that the informational efficiency of some sectors, namely banks, financial services, insurance, and basic resources, has been strongly reduced due to the financial crisis whereas another set of sectors, integrated by chemicals, automobiles, media, energy, construction, industrial goods & services, technology, and telecommunications has only suffered a transitory loss of efficiency. Last but not least, the food & beverage, healthcare, and utilities sectors show a behavior close to a random walk practically along all the period of analysis, confirming a remarkable immunity against the 2008 financial crisis.

Development of graphene oxide materials with controllably modified optical properties

NASA Astrophysics Data System (ADS)

Naumov, Anton; Galande, Charudatta; Mohite, Aditya; Ajayan, Pulickel; Weisman, R. Bruce

2015-03-01

One of the major current goals in graphene research is modifying its optical and electronic properties through controllable generation of band gaps. To achieve this, we have studied the changes in optical properties of reduced graphene oxide (RGO) in water suspension upon the exposure to ozone. Ozonation for the periods of 5 to 35 minutes has caused a dramatic bleaching of its absorption and the concurrent appearance of strong visible fluorescence in previously nonemissive samples. These observed spectral changes suggest a functionalization-induced band gap opening. The sample fluorescence induced by ozonation was found to be highly pH-dependent: sharp and structured emission features resembling the spectra of molecular fluorophores were present at basic pH values, but this emission reversibly broadened and red-shifted in acidic conditions. These findings are consistent with excited state protonation of the emitting species in acidic media. Oxygen-containing addends resulting from the ozonation were detected by XPS and FTIR spectroscopy and related to optical transitions in localized graphene oxide fluorophores by computational modeling. Further research will be directed toward producing graphene-based optoelectronic devices with tailored and controllable optical properties.

The production of anaerobic bacteria and biogas from dairy cattle waste in various growth mediums

NASA Astrophysics Data System (ADS)

Hidayati, Y. A.; Kurnani, T. B. A.; Marlina, E. T.; Rahmah, K. N.; Harlia, E.; Joni, I. M.

2018-02-01

The growth of anaerobic bacteria except the ruminal fluid quailty is strongly influenced by the media formulations. Previous researchers have set a standard media formulation for anaerobic bacteria from rumen, however the use of standard media formulations require chemicals with high cost. Moreover, other constraint of using standard media formulations is requires large quantities of media for anaerobic bacteria to grow. Therefore, it is necessary to find media with a new culture media formulation. Media used in this research were minimalist media consist of Nutrient Agar (NA), Lactose broth and rumen fluid; enriched media Rumen Fluid-Glucose-Agar (RGCA); and enriched media 98-5. The dairy cattle waste is utilized as source of anaerobic bacteria. The obtained data was analyzed by descriptive approach. The results showed that minimalist media produced anaerobic bacteria 2148 × 104 cfu/ml and biogas production: 1.06% CH4, 9.893% CO2; enriched media Rumen Fluid-Glucose-Agar (RGCA) produced anaerobic bacteria 1848 × 104 cfu/ml and biogas production 4.644% CH4, 9.5356% CO2; enriched media 98-5 produced anaerobic bacteria growth 15400 × 104 cfu/ml and biogas production 0.83% of CH4, 42.2% of CO2. It is conclude that the minimalist media was showed the best performance for the dairy cattle waste as source of anaerobic bacteria.

Reviewing and addressing the link between mass media and the increase in obesity among European children: The European Academy of Paediatrics (EAP) and The European Childhood Obesity Group (ECOG) consensus statement.

PubMed

Mazur, Artur; Caroli, Margherita; Radziewicz-Winnicki, Igor; Nowicka, Paulina; Weghuber, Daniel; Neubauer, David; Dembiński, Łukasz; Crawley, Francis P; White, Martin; Hadjipanayis, Adamos

2018-04-01

This study reviewed the link between social media and the growing epidemic of childhood obesity in Europe. A task force from the European Academy of Paediatrics and the European Childhood Obesity Group searched published literature and developed a consensus statement. It found that there was evidence of a strong link between obesity levels across European countries and childhood media exposure and that parents and society needed a better understanding of the influence of social media on dietary habits. Health policies in Europe must take account of the range of social media influences that promote the development of childhood obesity. ©2017 Foundation Acta Paediatrica. Published by John Wiley & Sons Ltd.

Media influences on children and adolescents: violence and sex.

PubMed

Earles, K A; Alexander, Randell; Johnson, Melba; Liverpool, Joan; McGhee, Melissa

2002-09-01

The portrayal of violence, sex, and drugs/alcohol in the media has been known to adversely affect the behavior of children and adolescents. There is a strong association between perceptions of media messages and observed behavior, especially with children. Lately, there has been more of a focus in the public health/medical field on media influences of youth and the role of the pediatrician and/or healthcare worker in addressing this area of growing concern. There is a need to explicitly explore the influences of media violence, sex, and drugs/alcohol on youth within the context of the Social Learning Theory. Implications of these influences are discussed, and recommendations for pediatricians and/or health care workers who interact with children and adolescents are described. Pediatricians and health care workers should incorporate media exposure probes into the developmental history of their patients and become knowledgeable about the effects of medial influences on youth.

Male and Female College Students' College Majors: The Contribution of Basic Vocational Confidence and Interests

ERIC Educational Resources Information Center

Larson, Lisa M.; Wu, Tsui-Feng; Bailey, Donna C.; Borgen, Fred H.; Gasser, Courtney E.

2010-01-01

The first purpose was to determine if overall gender differences in basic confidence as measured by the Expanded Skills Confidence Inventory (ESCI) and basic interests as measured by the 2005 Strong Interest Inventory (SII) would be present within eight college major families. As expected, anticipated overall gender differences in confidence and…

Rejected by peers-attracted to antisocial media content: rejection-based anger impairs moral judgment among adolescents.

PubMed

Plaisier, Xanthe S; Konijn, Elly A

2013-06-01

Adolescence is an important developmental stage during which both peers and the media have a strong influence. Both peer rejection and the use of morally adverse media are associated with negative developmental outcomes. This study examines processes by which peer rejection might drive adolescents to select antisocial media content by tying together developmental research on peer rejection and research on media effects. Assumed underlying mechanisms are rejection-based anger and frustration and the adolescent's moral judgment. A between-participants experimental design manipulated peer rejection versus acceptance in adolescents (Mage = 13.88 years; N = 74) and young adults (Mage = 21.37 years; N = 75), applying the Cyberball paradigm. Measures included the State Anger Inventory (STAXI) to assess feelings of rejection and the newly devised Media, Morals, and Youth Questionnaire (MMaYQue) to assess media preferences and moral judgment of media content. Using bootstrapping analyses, a double mediation was established: Higher levels of state anger in peer-rejected adolescents induced more tolerable moral judgments of antisocial media content, subsequently instigating a preference for antisocial media content. In contrast, the young adult sample showed no relations between peer rejection and antisocial media preference. Results are discussed within a downward spiral framework of combined peer and media influences. PsycINFO Database Record (c) 2013 APA, all rights reserved

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Negotiated media effects. Peer feedback modifies effects of media's thin-body ideal on adolescent girls.

PubMed

Veldhuis, Jolanda; Konijn, Elly A; Seidell, Jacob C

2014-02-01

The present study introduces a theoretical framework on negotiated media effects. Specifically, we argue that feedback of peers on thin-body ideal media images and individual dispositions guide effects on adolescent girls' psychosocial responses to media exposure. Therefore, we examined the thin-body ideal as portrayed in media and peers' feedback on such thin-ideal images in their combined effects on adolescent girls' body dissatisfaction, objectified body consciousness, and social comparison with media models. Hence, media models and peer comments were systematically combined as incorporated entities in YouTube-formats. Hypotheses were tested in a 3 (media models: extremely thin vs. thin vs. normal weight)×3 (peer comments: 6kg-underweight vs. 3kg-underweight vs. normal-weight)×2 (appearance schematicity: lower vs. higher) between-subjects design (N=216). Results showed that peer comments indicating that a media model was 'only 3kg-underweight' exerted most negative responses, particularly in girls who strongly process appearance relevant information. Peer feedback interacts with media models in guiding perceptions of what is considered an 'ideal' body shape. Results highlight the important role of peers as well as individual predispositions in view of understanding how thin-ideal media images may impact adolescent girls' body image concerns. Copyright © 2013 Elsevier Ltd. All rights reserved.

The Home Literacy Environment: Exploring How Media and Parent-Child Interactions Are Associated with Children's Language Production

ERIC Educational Resources Information Center

Liebeskind, Kara G.; Piotrowski, Jessica T.; Lapierre, Matthew A.; Linebarger, Deborah L.

2014-01-01

Children who start school with strong language skills initiate a trajectory of academic success, while children with weaker skills are likely to struggle. Research has demonstrated that media and parent-child interactions, both characteristics of the home literacy environment, influence children's language skills. Using a national sample of…

Alienation, Aggression, and Sensation Seeking as Predictors of Adolescent Use of Violent Film, Computer, and Website Content.

ERIC Educational Resources Information Center

Slater, Michael D.

2003-01-01

Examines predictors of various types of self-reported use of violent media content by eighth graders. Indicates that gender, sensation-seeking, aggression, and frequency of Internet use had relatively strong contributions to explaining the use of violent media content. Notes that alienation from school and family also appeared to partially mediate…

Perceptions of the News Media's Societal Roles: How the Views of U.K. Journalism Students Changed during Their Education

ERIC Educational Resources Information Center

Hanna, Mark; Sanders, Karen

2012-01-01

A longitudinal study of U.K. journalism undergraduates records how their attitudes on societal roles of the news media changed during university education. Students became more likely to endorse an adversarial approach toward public officials and businesses as extremely important. Yet students did not support these roles as strongly as an older…

Wettability control on fluid-fluid displacements in patterned microfluidics

NASA Astrophysics Data System (ADS)

Zhao, Benzhong; MacMinn, Christopher; Juanes, Ruben

2015-11-01

Two-phase flow in porous media is important in many natural and industrial processes. While it is well known the wetting properties of porous media can vary drastically depending on the media and the pore fluids, their effect continues to challenge our microscopic and macroscopic descriptions. We conduct experiments via radial displacement of silicone oil by water in microfluidic devices patterned with vertical posts. These devices allow for flow visualization in a complex but well-defined microstructure. Additionally, the surface energy of the devices can be tuned over a wide range of contact angles. We perform injection experiments with highly unfavorable mobility contrast at rates over four orders of magnitude. We focus on three wetting conditions: drainage θ = 120°, weak imbibition θ = 60°, and strong imbibition θ = 7°. In drainage, we see a transition from viscous fingering at high capillary numbers to a morphology that differs from capillary fingering. In weak imbibition, we observe stabilization of flow due to cooperative invasion at the pore scale. In strong imbibition, we find the flow is heavily influenced by a precursor front that emanates from the main imbibition front. Our work shows the important, yet intricate, impact of wettability on immiscible flow in porous media.

Generalized migration in frequency-wavenumber domain (MGF-K) in anisotropic media

NASA Astrophysics Data System (ADS)

Kostecki, Andrzej; Półchłopek, Anna

2013-06-01

In this paper, the background of MGF-K migration in dual domain (wavenumber-frequency K-F and space-time) in anisotropic media is presented. Algorithms for poststack (zero-offset) and prestack migration are based on downward extrapolation of acoustic wavefield by shift-phase with correction filter for lateral variability of medium's parameters. In anisotropic media, the vertical wavenumber was determined from full elastic wavefield equations for two dimensional (2D) tilted transverse isotropy (TTI) model. The method was tested on a synthetic wavefield for TTI anticlinal model (zero-offset section) and on strongly inhomogeneous vertical transverse isotropy (VTI) Marmousi model. In both cases, the proper imaging of assumed media was obtained.

Brief report on a systematic review of youth violence prevention through media campaigns: Does the limited yield of strong evidence imply methodological challenges or absence of effect?

PubMed

Cassidy, Tali; Bowman, Brett; McGrath, Chloe; Matzopoulos, Richard

2016-10-01

We present a brief report on a systematic review which identified, assessed and synthesized the existing evidence of the effectiveness of media campaigns in reducing youth violence. Search strategies made use of terms for youth, violence and a range of terms relating to the intervention. An array of academic databases and websites were searched. Although media campaigns to reduce violence are widespread, only six studies met the inclusion criteria. There is little strong evidence to support a direct link between media campaigns and a reduction in youth violence. Several studies measure proxies for violence such as empathy or opinions related to violence, but the link between these measures and violence perpetration is unclear. Nonetheless, some evidence suggests that a targeted and context-specific campaign, especially when combined with other measures, can reduce violence. However, such campaigns are less cost-effective to replicate over large populations than generalised campaigns. It is unclear whether the paucity of evidence represents a null effect or methodological challenges with evaluating media campaigns. Future studies need to be carefully planned to accommodate for methodological difficulties as well as to identify the specific elements of campaigns that work, especially in lower and middle income countries. Copyright © 2016 The Foundation for Professionals in Services for Adolescents. Published by Elsevier Ltd. All rights reserved.

Examination of personality characteristics in a Turkish sample: development of Basic Personality Traits Inventory.

PubMed

Gençöz, Tülin; Öcül, Öznur

2012-01-01

The aim of the present study was to test the cross-cultural validity of the five-factor nature of personality. For this aim, an indigenous, psychometrically strong instrument measuring the basic personality dimensions within Turkish culture and language was developed through three consecutive studies. The first study aimed to reveal the adjectives that have been most frequently used to define people in the Turkish culture. In the second study, factor analysis of these personality characteristics revealed big five personality factors, along with the sixth factor, which had been called as the Negative Valence factor. The adjectives that most strongly represented and differentiated each factor constituted 45-item "Basic Personality Traits Inventory". Finally, in the third study, psychometric characteristics of the Basic Personality Traits Inventory were examined. Factor structure and psychometric properties of this instrument confirmed that five-factor nature of personality may not hold true in every culture.

Media Coverage of Alcohol Issues: A Critical Political Economy Framework-A Case Study from Ireland.

PubMed

Mercille, Julien

2017-06-16

There is a growing literature on news media representations of alcohol-related issues. However, current scholarship has neglected critical political economic frameworks to interpret media coverage of alcohol. This paper presents such a framework that conceives of news organisations as corporations that share the values and interests of political and economic elites. The media are thus expected to present viewpoints that are more aligned with the alcohol industry than the scientific consensus on public health policy would warrant. The media are also expected, but to a lesser extent, to present a certain amount of support for public health perspectives because these are supported by a few socioeconomic elite groups (the medical professions, progressive politicians). The case of Ireland from 2012 to 2017 illustrates the framework empirically. Four main newspapers' coverage of the Public Health (Alcohol) Bill and related policies is examined. Results show that, overall, 44.0% of articles support public health measures and 56.0% are opposed or remain neutral. It is argued that the media are not strong proponents of public health for multiple reasons: there are more articles opposed to or neutral toward public health measures than supporting them; the number of supportive articles remains relatively small and there are still many pieces presenting drinks industry views; there are virtually no calls in the media for stronger measures; supportive coverage is partially explained by the pub owners lobby's support for minimum unit pricing; the media often downplay or ignore the negative consequences of alcohol, such as its role in accidents; many news articles normalise drinking and promote events sponsored by the industry; there is not a single Irish journalist covering alcohol issues systematically; and other policy issues that are prioritised by elites receive multiple times more media coverage than public health measures. In short, the media reflect the views of the political and economic establishment on public health measures: there is some support from the medical professions and progressive politicians, but overall, there is a clear reluctance to support strong public health strategies. One main recommendation for public health advocates to promote their perspectives is to diversify the mass media and make them less commercial in nature, as well as to engage with non-corporate, so-called progressive "alternative media" outlets.

Time to take human embryo culture seriously.

PubMed

Sunde, Arne; Brison, Daniel; Dumoulin, John; Harper, Joyce; Lundin, Kersti; Magli, M Cristina; Van den Abbeel, Etienne; Veiga, Anna

2016-10-01

Is it important that end-users know the composition of human embryo culture media? We argue that there is as strong case for full transparency concerning the composition of embryo culture media intended for human use. Published data suggest that the composition of embryo culture media may influence the phenotype of the offspring. A review of the literature was carried out. Data concerning the potential effects on embryo development of culture media were assessed and recommendations for users made. The safety of ART procedures, especially with respect to the health of the offspring, is of major importance. There are reports from the literature indicating a possible effect of culture conditions, including culture media, on embryo and fetal development. Since the introduction of commercially available culture media, there has been a rapid development of different formulations, often not fully documented, disclosed or justified. There is now evidence that the environment the early embryo is exposed to can cause reprogramming of embryonic growth leading to alterations in fetal growth trajectory, birthweight, childhood growth and long-term disease including Type II diabetes and cardiovascular problems. The mechanism for this is likely to be epigenetic changes during the preimplantation period of development. In the present paper the ESHRE working group on culture media summarizes the present knowledge of potential effects on embryo development related to culture media, and makes recommendations. There is still a need for large prospective randomized trials to further elucidate the link between the composition of embryo culture media used and the phenotype of the offspring. We do not presently know if the phenotypic changes induced by in vitro embryo culture represent a problem for long-term health of the offspring. Published data indicate that there is a strong case for demanding full transparency concerning the compositions of and the scientific rationale behind the composition of embryo culture media. This work was funded by The European Society for Human Reproduction and Embryology. No competing interests to declare. © The Author 2016. Published by Oxford University Press on behalf of the European Society of Human Reproduction and Embryology. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

Introduction to cell culture.

PubMed

Philippeos, Christina; Hughes, Robin D; Dhawan, Anil; Mitry, Ragai R

2012-01-01

The basics of cell culture as applied to human cells are discussed. Biosafety when working with human tissue, which is often pathogenic, is important. The requirements for a tissue culture laboratory are described, particularly the range of equipment needed to carry out cell isolation, purification, and culture. Steps must be taken to maintain aseptic conditions to prevent contamination of cultures with micro-organisms. Basic cell-handling techniques are discussed, including choice of media, primary culture, and cryopreservation of cells so they can be stored for future use. Common assays which are used to determine cell viability and activity are considered.

Eco-Heroes and Eco-Villains: An Archetypal Analysis of Environmental Film, 1950-2010

ERIC Educational Resources Information Center

Roberts, Candice D.; Stein, Susan

2015-01-01

Archetypes are characters recognizable by media consumers that operate at a subconscious level and often elicit strong emotional responses. Popular Hollywood films addressing issues of the environment offer hero and villain figures that demonstrate strong archetypal characteristics. Surrounding the intricate characters, many of these films also…

Radiological contrast media in the breastfeeding woman: a position paper of the Italian Society of Radiology (SIRM), the Italian Society of Paediatrics (SIP), the Italian Society of Neonatology (SIN) and the Task Force on Breastfeeding, Ministry of Health, Italy.

PubMed

Cova, Maria Assunta; Stacul, Fulvio; Quaranta, Roberto; Guastalla, Pierpaolo; Salvatori, Guglielmo; Banderali, Giuseppe; Fonda, Claudio; David, Vincenzo; Gregori, Massimo; Zuppa, Antonio Alberto; Davanzo, Riccardo

2014-08-01

Breastfeeding is a well-recognised investment in the health of the mother-infant dyad. Nevertheless, many professionals still advise breastfeeding mothers to temporarily discontinue breastfeeding after contrast media imaging. Therefore, we performed this review to provide health professionals with basic knowledge and skills for appropriate use of contrast media. A joint working group of the Italian Society of Radiology (SIRM), Italian Society of Paediatrics (SIP), Italian Society of Neonatology (SIN) and Task Force on Breastfeeding, Ministry of Health, Italy prepared a review of the relevant medical literature on the safety profile of contrast media for the nursing infant/child. Breastfeeding is safe for the nursing infant of any post-conceptional age after administration of the majority of radiological contrast media to the mother; only gadolinium-based agents considered at high risk of nephrogenic systemic fibrosis (gadopentetate dimeglumine, gadodiamide, gadoversetamide) should be avoided in the breastfeeding woman as a precaution; there is no need to temporarily discontinue breastfeeding or to express and discard breast milk following the administration of contrast media assessed as compatible with breastfeeding. Breastfeeding women should receive unambiguous professional advice and clear encouragement to continue breastfeeding after imaging with the compatible contrast media. • Breastfeeding is a well-known investment in the health of the mother-infant dyad. • Breastfeeding is safe after administration of contrast media to the mother. • There is no need to temporarily discontinue breastfeeding following administration of contrast media.

Signal enhancement for gradient reverse-phase high-performance liquid chromatography-electrospray ionization mass spectrometry analysis with trifluoroacetic and other strong acid modifiers by postcolumn addition of propionic acid and isopropanol.

PubMed

Kuhlmann, F E; Apffel, A; Fischer, S M; Goldberg, G; Goodley, P C

1995-12-01

Trifluoroacetic acid (TFA) and other volatile strong acids, used as modifiers in reverse-phase high-performance liquid chromatography, cause signal suppression for basic compounds when analyzed by electrospray ionization mass spectrometry (ESI-MS). Evidence is presented that signal suppression is caused by strong ion pairing between the TFA anion and the protonated sample cation of basic sample molecules. The ion-pairing process "masks" the protonated sample cations from the ESI-MS electric fields by rendering them "neutral. " Weakly basic molecules are not suppressed by this process. The TFA signal suppression effect is independent from the well-known spray problem that electrospray has with highly aqueous solutions that contain TFA. This previously reported spray problem is caused by the high conductivity and surface tension of aqueous TFA solutions. A practical method to enhance the signal for most basic analytes in the presence of signal-suppressing volatile strong acids has been developed. The method employs postcolumn addition of a solution of 75% propionic acid and 25% isopropanol in a ratio 1:2 to the column flow. Signal enhancement is typically 10-50 times for peptides and other small basic molecules. Thus, peptide maps that use ESI-MS for detection can be performed at lower levels, with conventional columns, without the need to use capillary chromatography or reduced mass spectral resolution to achieve satisfactory sensitivity. The method may be used with similar results for heptafluorobutyric acid and hydrochloric acid. A mechanism for TFA signal suppression and signal enhancement by the foregoing method, is proposed.

[Media use with developmental benefits].

PubMed

Hipeli, E; Süss, D

2012-08-01

For children of school age television is still the dominant medium. TV consumption isn't only limited on the TV set, but also happens on the computer with internet access and mobile devices. Computer games take a high priority for boys. For girls reading is still an important experience space. Parents influence the media use of their children by their role model, and the rates for shared non-media experiences. Neighborhoods which aren't child-friendly can cause children's withdraw into home media spaces. Restrictions and controls are less important than the conversations that are conducted around media interests of the child and parents attention to early signs of problematic media use. Potentially irritating media content for children (such as violence or sex) can have strong effects when there's no open debate taking place in the family around these issues. Today's media diversity leads to parallel surfing and multi-tasking. In order that this doesn't influence children's cognitive development and learning negatively a culture of regular restriction to one activity, to which they devote their full attention, is required.

Laguerre-Gaussian, Hermite-Gaussian, Bessel-Gaussian, and Finite-Energy Airy Beams Carrying Orbital Angular Momentum in Strongly Nonlocal Nonlinear Media

NASA Astrophysics Data System (ADS)

Wu, Zhenkun; Gu, Yuzong

2016-12-01

The propagation of two-dimensional beams is analytically and numerically investigated in strongly nonlocal nonlinear media (SNNM) based on the ABCD matrix. The two-dimensional beams reported in this paper are described by the product of the superposition of generalized Laguerre-Gaussian (LG), Hermite-Gaussian (HG), Bessel-Gaussian (BG), and circular Airy (CA) beams, carrying an orbital angular momentum (OAM). Owing to OAM and the modulation of SNNM, we find that the propagation of these two-dimensional beams exhibits complete rotation and periodic inversion: the spatial intensity profile first extends and then diminishes, and during the propagation the process repeats to form a breath-like phenomenon.

Science fiction/science fact: medical genetics in news stories.

PubMed

Petersen, Alan; Anderson, Alison; Allan, Stuart

2005-12-01

News media coverage of biotechnology issues offers a rich source of fictional portrayals, with stories drawing strongly on popular imagery and metaphors in descriptions of the powers and dangers of biotechnology. This article examines how science fiction metaphors, imagery and motifs surface in British newspaper (broadsheet and tabloid) coverage of medical genetic issues, focusing on press reporting of two recent highly publicised news media events; namely, the Hashmi and Whitaker families' plights to use stem cells from a 'perfectly matched sibling' for the treatment of their diseased children. It is concerned in particular with the extent to which journalists' use of certain literary devices encourages preferred formulations of medical genetics, and thereby potentially shapes public deliberation about scientific developments and their consequences for society. Understanding how science fiction sustains science fact, and vice versa, and how the former is portrayed in news media, it is argued, would thus seem to be crucial in the effort to understand why people respond so strongly to biotechnologies, and what they imagine their consequences to be.

Effect of flow on bacterial transport and biofilm formation in saturated porous media

NASA Astrophysics Data System (ADS)

Rusconi, R.

2016-12-01

Understanding the transport of bacteria in saturated porous media is crucial for many applications ranging from the management of pumping wells subject to bio-clogging to the design of new bioremediation schemes for subsurface contamination. However, little is known about the spatial distribution of bacteria at the pore scale, particularly when small-scale heterogeneities - always present even in seemingly homogeneous aquifers - lead to preferential pathways for groundwater flow. In particular, the coupling of flow and motility has recently been shown to strongly affect bacterial transport1, and this leads us to predict that subsurface flow may strongly affect the dispersal of bacteria and the formation of biofilms in saturated aquifers. I present here microfluidic experiments combined with numerical simulations to show how the topological features of the flow correlate with bacterial concentration and promote the attachment of bacteria to specific regions of the pore network, which will ultimately influence the formations of biofilms. These results highlight the intimate link between small-scale biological processes and transport in porous media.

Temperature Effect of Hydrogen-Like Impurity on the Ground State Energy of Strong Coupling Polaron in a RbCl Quantum Pseudodot

NASA Astrophysics Data System (ADS)

Xiao, Jing-Lin

2016-11-01

We study the ground state energy and the mean number of LO phonons of the strong-coupling polaron in a RbCl quantum pseudodot (QPD) with hydrogen-like impurity at the center. The variations of the ground state energy and the mean number of LO phonons with the temperature and the strength of the Coulombic impurity potential are obtained by employing the variational method of Pekar type and the quantum statistical theory (VMPTQST). Our numerical results have displayed that [InlineMediaObject not available: see fulltext.] the absolute value of the ground state energy increases (decreases) when the temperature increases at lower (higher) temperature regime, [InlineMediaObject not available: see fulltext.] the mean number of the LO phonons increases with increasing temperature, [InlineMediaObject not available: see fulltext.] the absolute value of ground state energy and the mean number of LO phonons are increasing functions of the strength of the Coulombic impurity potential.

A Critical Analysis of USAir's Image Repair Discourse.

ERIC Educational Resources Information Center

Benoit, William L.; Czerwinski, Anne

1997-01-01

Applies the theory of image restoration to a case study of USAir's response to media coverage of a 1994 crash. Argues that introducing such case studies in the classroom helps students to understand the basic tenets of persuasion in the highly charged context of repairing a corporate reputation after an attack. (SR)

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Software-Based Scoring and Sound Design: An Introductory Guide for Music Technology Instruction

ERIC Educational Resources Information Center

Walzer, Daniel A.

2016-01-01

This article explores the creative function of virtual instruments, sequencers, loops, and software-based synthesizers to introduce basic scoring and sound design concepts for visual media in an introductory music technology course. Using digital audio workstations with user-focused and configurable options, novice composers can hone a broad range…

Film: An Introduction.

ERIC Educational Resources Information Center

Fell, John L.

"Understanding Film," the opening section of this book, discusses perceptions of and responses to film and the way in which experiences with and knowledge of other media affect film viewing. The second section, "Film Elements," analyzes the basic elements of film: the use of space and time, the impact of editing, sound and color, and the effects…

"I'll Take Commas for $200": An Instructional Intervention Using Games to Help Students Master Grammar Skills

ERIC Educational Resources Information Center

Bullard, Sue Burzynski; Anderson, Nancy

2014-01-01

Effective writing requires mastering grammar. For journalists, this mastery is critical because research shows poor grammar erodes media credibility. College writing instructors say students do not understand basic grammar concepts, and greater numbers of students are enrolling in remedial writing classes. This quasi-experimental mixed methods…

An Effect of Interactive Media in a Social Awareness Ubiquitous Learning Community

ERIC Educational Resources Information Center

Na-songkhla, Jaitip

2011-01-01

Chulalongkorn University collaboratively worked with the Office of Basic Education, and Department of Highways, with support from a Corporate Social Responsibility Unit (CSR) of Toyota motor Thailand in a Road Safety Project. The project was aimed at cultivating a social awareness, "from a school to a community", using a set of…

Shared Knowledge among Graphic Designers, Instructional Designers and Subject Matter Experts in Designing Multimedia-Based Instructional Media

ERIC Educational Resources Information Center

Razak, Rafiza Abdul

2013-01-01

The research identified and explored the shared knowledge among the instructional multimedia design and development experts comprising of subject matter expert, graphic designer and instructional designer. The knowledge shared by the team was categorized into three groups of multimedia design principles encompasses of basic principles, authoring…

Video-Taping Dialogs, with Commentary to Teach Cultural Elements.

ERIC Educational Resources Information Center

Taylor, Harvey M.

Description of a project involving the use of the video-tape recorder in a beginning course in Japanese focuses on cultural implications of basic unit dialogues. Instant replay, close-up, and other camera techniques allow students to concentrate on cross-cultural phenomena which are normally not perceived without the use of media. General…

Of Mice and Meth: A New Media-Based Neuropsychopharmacology Lab to Teach Research Methods

ERIC Educational Resources Information Center

Hatch, Daniel L.; Zschau, Tony; Hays, Arthur; McAllister, Kristin; Harrison, Michelle; Cate, Kelly L.; Shanks, Ryan A.; Lloyd, Steven A.

2014-01-01

This article describes an innovative neuropsychopharmacology laboratory that can be incorporated into any research methods class. The lab consists of a set of interconnected modules centered on observations of methamphetamine-induced behavioral changes in mice and is designed to provide students with an opportunity to acquire basic skills…

Writing the Future in the Digital Age

ERIC Educational Resources Information Center

Merchant, Guy

2007-01-01

Meaning making in new media presents new opportunities and challenges for those working in formal and informal educational contexts. How this impacts on a literacy curriculum that attempts both to deliver "the basics" and to respond to new technology demands careful exploration. This paper examines what we mean by digital literacy and how it…

Local Area Networks in Education: Overview, Applications, and Current Limitations.

ERIC Educational Resources Information Center

Piele, Philip K.

Local area networks (LAN) are privately owned communication systems that connect multivendor devices at high speed. As microcomputers become more common in schools, user interest in sharing information, software, and peripherals will increase. A basic understanding of the operation of all LAN's can be gained by knowing four elements: media,…

The Complex Association between Religious Activities and Functional Limitations in Older Adults

ERIC Educational Resources Information Center

Hybels, Celia F.; Blazer, Dan G.; George, Linda K.; Koenig, Harold G.

2012-01-01

Purpose of the Study: To examine the longitudinal associations between 3 dimensions of religious involvement--religious attendance, use of religious media, and private religious activities--and 3 domains of functional status--limitations in basic activities of daily living (ADL), instrumental activities of daily living (IADL), and mobility in…

New Media in Higher Education. Papers on Information Technology No. 241.

ERIC Educational Resources Information Center

Bates, A. W.

The Open University from its inception in 1969 has been a technologically based university. It uses technology to deliver high quality, specially designed teaching materials to large numbers of adult students throughout Britain, and increasingly abroad, who study at home. The Open University's teaching system has remained basically unchanged since…

A Child's Right to Be Entertained

ERIC Educational Resources Information Center

Leidman, Mary Beth

2006-01-01

The purpose of this discussion is to explore the idea that children, like adults, have certain rights that include the basic right to be entertained. A hypothesis was developed supporting the idea that there exists affective value for a child if he or she has the opportunity to occasionally sit and watch media which contains no particular…

Basic Skills Applications in Career Investigation: Mathematics, Science, Social Studies, Communications, Productive Work Habits. Revised.

ERIC Educational Resources Information Center

Hendrix, Mary W.

These materials allow instructors to provide learning experiences that stress the equal importance of academic and vocational education and the personal and social matters related to the work ethic. Instructional materials are provided in 15 clusters: agribusiness and natural resources; business and office; communications and media; construction;…

Learning from Students: Reflections from Personal Magazines in Basic Design Course

ERIC Educational Resources Information Center

Gelmez, Koray; Bagli, Humanur

2015-01-01

Reflective writing is an efficient way of getting feedback from students. Paper-based or web-based course evaluation questionnaires alone may lack of collecting specific and detailed information, especially for the fields like design education. This study focuses on reflections captured from students via two different media--personal magazine and…

Many Ways to Make A Line

ERIC Educational Resources Information Center

Ferrell, Holly

2006-01-01

This article describes a middle school introductory art lesson that encourages experimentation as an essential part of the creative process. In this lesson, students experiment with different types of media and tools to create an abstract piece that focuses on the most basic element of art--line. Students focus on line quality, focal points,…

Electronically Recorded Music as a Communication Medium: A Structural Analysis with Selected Bibliography.

ERIC Educational Resources Information Center

Jorgensen, Earl; Mabry, Edward A.

During the past decade, the influence of electronically recorded music and the message it transmits have caused media scholars to reexamine and modify the theories upon which the basic process of communication is dependent. While the five primary functions (source, transmitter, channel, receiver, and destination) remain unchanged, an additional…

Lost in Translation? Deconstructing Science in the News through an Inquiry-Based Course

ERIC Educational Resources Information Center

Rangachari, P. K.

2006-01-01

This report describes an experiment to introduce freshmen science students to inquiry-based learning. The overarching theme was the communication of scientific information to the public by the mass media. Students, working in groups, deconstructed news items (many dealing with basic biomedical issues) and assessed the veracity of statements with…

SALES PROMOTION, A SUGGESTED ADULT DISTRIBUTIVE EDUCATION COURSE OUTLINE.

ERIC Educational Resources Information Center

RUBIN, ALAN J.; AND OTHERS

THIS SUGGESTED OUTLINE FOR A BASIC COURSE IN SALES PROMOTION IS DESIGNED FOR NOT LESS THAN FIVE 2-HOUR SESSIONS ON (1) ASPECTS OF SALES PROMOTION, (2) SALES PROMOTION TECHNIQUES, (3) NEWSPAPER ADVERTISING, (4) WINDOW AND INTERIOR DISPLAY PRINCIPLES, AND (5) SELECTED PROMOTIONAL MEDIA AND DEVICES. POSSIBLE TEACHERS INCLUDE A SALES PROMOTION…

Here in the Real World: MTV Meets the Communication Classroom.

ERIC Educational Resources Information Center

Grubbs, Jim

A study investigated how a contemporary, popular media program such as "The Real World" (on MTV) can be used most effectively in the classroom to illustrate the basic concepts of interpersonal, group, and family communication. The 21 individual 22-minute episodes of the second season of "The Real World" (a combination of…

Don't Shoot the Messenger: Public Relations for Law Enforcement

ERIC Educational Resources Information Center

Baxter, David S.

2013-01-01

This communication project provides an overview of public relations as seen through the communication arts. It is specifically focused to give law enforcement officers a general review of the practice of public relations, communication basics, and an understanding of the media. This course also provides the facilitator with multiple tools for…

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Standards for Cataloging Nonprint Materials. Fourth Edition. An Interpretation and Practical Application.

ERIC Educational Resources Information Center

Tillin, Alma M.; Quinly, William J.

Standards established by the Association for Educational Communications and Technology (AECT) set forth basic cataloging rules that apply to all types of nonprint materials. Included are all elements needed to identify, describe, and retrieve an article. Cataloging rules are applied to 18 specific media formats including audiorecording, films,…

Pedagogical Red Tape: Difficulties in Teaching the Bureaucracy to Undergraduate Students

ERIC Educational Resources Information Center

Miller, William J.; Kaltenthaler, Karl; Feuerstein, Derek

2010-01-01

Americans are often perceived as holding extremely negative views of governmental bureaucrats. Phrases like bureaucratic waste and unresponsive bureaucracy fill the mainstream media and taint the image of bureaucrats. Beginning in basic high school civics classes, students are taught to respect the lawmaking process, the executive power of the…

M.C. Escher Portraits

ERIC Educational Resources Information Center

Yonker, Kim

2009-01-01

The author has always loved teaching a lesson on self-portraits to her eighth-grade students. Portraits raise the bar and, when they are successful, convince the students that they really can draw. Each year they explore the basic concepts of portraiture, but use different media, sizes and styles. The author likes to interject art history and…

Amor y Salud (Love and Health): a preconception health campaign for second-generation Latinas in Oregon.

PubMed

Dixon-Gray, Lesa A; Mobley, Allison; McFarlane, Julie M; Rosenberg, Kenneth D

2013-01-01

To develop, and implement, a social marketing campaign to increase preconception health knowledge among second-generation Latinas in Oregon. Social marketing demonstration project. Latino communities in five Oregon counties. Target populations included young Latinas (18-29 years old) born in the United States of immigrant parents in five Oregon counties, and their family members. Intervention. A radionovela, Amor y Salud, was developed that featured a Latina and her fiancé preparing for marriage and family. Social media, Web sites, and culturally relevant print materials promoted the radio campaign. Process data, social media metrics, Google analytics, online and intercept surveys were collected. Basic frequencies and descriptive statistics were used. Twelve episodes were produced in English and Spanish and played on nine radio stations a total of 2098 times. The Facebook page was viewed 11,000 times, and radionovela episodes were played a total of 776 times. Amor y Salud used mixed media--radio, social media, print materials--to encourage Latinas to consider their preconception health. Anecdotally, we heard positive comments from community members and local media regarding the radionovela; however, evaluation challenges prevent us from saying conclusively that knowledge on this topic increased.

Iridium Complexes with Proton-Responsive Azole-Type Ligands as Effective Catalysts for CO 2 Hydrogenation

DOE PAGES

Ertem, Mehmed Zahid; Suna, Yuki; Himeda, Yuichiro; ...

2017-10-06

Pentamethylcyclopentadienyl iridium (Cp*Ir) complexes with bidentate ligands consisting of a pyridine ring and an electron-rich diazole ring were prepared. Their catalytic activity towards CO 2 hydrogenation in 2.0 M KHCO 3 aqueous solutions (pH 8.5) at 50 °C, under 1.0 MPa CO 2/H 2 (1:1) have been reported as an alternative to photo- and electrochemical CO 2 reduction. Bidentate ligands incorporating an electron-rich diazole ring improved the catalytic performance of the Ir complexes compared to the bipyridine ligand. Complexes 2, 4 and 6, possessing both a hydroxy group and an uncoordinated NH group, which are proton-responsive and capable of generatingmore » pendent-bases in basic media, recorded high initial TOF values of 1300 h -1, 1550 h -1 and 2000 h -1, respectively. Here, spectroscopic and computational investigations revealed that the reversible deprotonation changes the electronic properties of the complexes and causes interactions between pendent base and substrate and/or solvent water molecules, resulting in the high catalytic performance in basic media.« less

Iridium Complexes with Proton-Responsive Azole-Type Ligands as Effective Catalysts for CO2 Hydrogenation.

PubMed

Suna, Yuki; Himeda, Yuichiro; Fujita, Etsuko; Muckerman, James T; Ertem, Mehmed Z

2017-11-23

Pentamethylcyclopentadienyl iridium (Cp*Ir) complexes with bidentate ligands consisting of a pyridine ring and an electron-rich diazole ring were prepared. Their catalytic activity toward CO 2 hydrogenation in 2.0 m KHCO 3 aqueous solutions (pH 8.5) at 50 °C, under 1.0 MPa CO 2 /H 2 (1:1) have been reported as an alternative to photo- and electrochemical CO 2 reduction. Bidentate ligands incorporating an electron-rich diazole ring improved the catalytic performance of the Ir complexes compared to the bipyridine ligand. Complexes 2, 4, and 6, possessing both a hydroxy group and an uncoordinated NH group, which are proton-responsive and capable of generating pendent bases in basic media, recorded high initial turnover frequency values of 1300, 1550, and 2000 h -1 , respectively. Spectroscopic and computational investigations revealed that the reversible deprotonation changes the electronic properties of the complexes and causes interactions between pendent base and substrate and/or solvent water molecules, resulting in high catalytic performance in basic media. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

Luminol modified polycarbazole and poly(o-anisidine): Theoretical insights compared with experimental data.

PubMed

Jadoun, Sapana; Verma, Anurakshee; Riaz, Ufana

2018-06-07

With the aim to explore the effect of luminol as a multifunctional dopant for conjugated polymers, the present study reports the ultrasound-assisted doping of polycarbazole (PCz) and poly(o-anisidine) (PAnis) with luminol in basic, acidic and neutral media. The synthesized homopolymers and luminol doped polymers were characterized using FT-IR, UV-visible and XRD studies while the photo-physical properties were investigated via fluorescence spectroscopy. Density functional theory (DFT) calculations were performed to get insights into the structural, optical, and electronic properties of homopolymers of polycarbazole (PCz) and poly(o-anisidine) (PAnis). Vibrational bands B3LYP/6-311G (d,p) level, UV-vis spectral bands and electronic properties such as ionization potentials (IP), electron affinities (EA) and HOMO-LUMO band gap energies of the homopolymers and doped polymers were calculated and compared. Results revealed that luminol doped polymers showed different photo-physical characteristics in acidic, basic and neutral media which could be tuned to obtain near infrared (NIR) emitting polymers. Copyright © 2018 Elsevier B.V. All rights reserved.

Anomalous postcritical refraction behavior for certain transversely isotropic media

USGS Publications Warehouse

Fa, L.; Brown, R.L.; Castagna, J.P.

2006-01-01

Snell's law at the boundary between two transversely isotropic media with a vertical axis of symmetry (VTI media) can be solved by setting up a fourth order polynomial for the sine of the reflection/transmission angles. This approach reveals the possible presence of an anomalous postcritical angle for certain transversely isotropic media. There are thus possibly three incident angle regimes for the reflection/refraction of longitudinal or transverse waves incident upon a VTI medium: precritical, postcritical/preanomalous, and postanomalous. The anomalous angle occurs for certain strongly anisotropic media where the required root to the phase velocity equation must be switched in order to obey Snell's law. The reflection/transmission coefficients, polarization directions, and the phase velocity are all affected by both the anisotropy and the incident angle. The incident critical angles are also effected by the anisotropy. ?? 2006 Acoustical Society of America.

Achieving a strongly negative scattering asymmetry factor in random media composed of dual-dipolar particles

NASA Astrophysics Data System (ADS)

Wang, B. X.; Zhao, C. Y.

2018-02-01

Understanding radiative transfer in random media like micro- or nanoporous and particulate materials, allows people to manipulate the scattering and absorption of radiation, as well as opens new possibilities in applications such as imaging through turbid media, photovoltaics, and radiative cooling. A strong-backscattering phase function, i.e., a negative scattering asymmetry parameter g , is of great interest, which can possibly lead to unusual radiative transport phenomena, for instance, Anderson localization of light. Here we demonstrate that by utilizing the structural correlations and second Kerker condition for a disordered medium composed of randomly distributed silicon nanoparticles, a strongly negative scattering asymmetry factor (g ˜-0.5 ) for multiple light scattering can be realized in the near infrared. Based on the multipole expansion of Foldy-Lax equations and quasicrystalline approximation (QCA), we have rigorously derived analytical expressions for the effective propagation constant and scattering phase function for a random system containing spherical particles, by taking the effect of structural correlations into account. We show that as the concentration of scattering particles rises, the backscattering is also enhanced. Moreover, in this circumstance, the transport mean free path is largely reduced and even becomes smaller than that predicted by independent scattering approximation. We further explore the dependent scattering effects, including the modification of electric and magnetic dipole excitations and far-field interference effect, both induced and influenced by the structural correlations, for volume fraction of particles up to fv˜0.25 . Our results have profound implications in harnessing micro- or nanoscale radiative transfer through random media.

[Efficiency of combination therapy for acute otitis media].

PubMed

Poliakova, S D; Nekrasova, E A

2010-01-01

The clinical efficiency of treatment was evaluated in 60 patients aged 18 to 60 years with protracted acute otitis media (AOM) who had residual tympanic membrane inflammation and exudates in the tympanic cavity. The patients were divided into 2 groups of 30 each, who received equal basic medical treatment; Group 1 patients were additionally given eurespal (fenspiride) 80 mg thrice daily for 2 weeks. The patients were examined by clinical, endoscopic, and audiometric studies; the transport function of the nasal ciliated epithelium was also explored. The findings suggest the benefits of the additional use of eurespal in the treatment of the catarrhal stage of AOM.

Automated Static Culture System Cell Module Mixing Protocol and Computational Fluid Dynamics Analysis

NASA Technical Reports Server (NTRS)

Kleis, Stanley J.; Truong, Tuan; Goodwin, Thomas J,

2004-01-01

This report is a documentation of a fluid dynamic analysis of the proposed Automated Static Culture System (ASCS) cell module mixing protocol. The report consists of a review of some basic fluid dynamics principles appropriate for the mixing of a patch of high oxygen content media into the surrounding media which is initially depleted of oxygen, followed by a computational fluid dynamics (CFD) study of this process for the proposed protocol over a range of the governing parameters. The time histories of oxygen concentration distributions and mechanical shear levels generated are used to characterize the mixing process for different parameter values.

Media Roles in Suicide Prevention: A Systematic Review

PubMed Central

Sisask, Merike; Värnik, Airi

2012-01-01

The aim of the current systematic review was to monitor and provide an overview of the research performed about the roles of media in suicide prevention in order to find out possible effects media reporting on suicidal behaviours might have on actual suicidality (completed suicides, attempted suicides, suicidal ideation). The systematic review was performed following the principles of the PRISMA statement and includes 56 articles. Most of the studies support the idea that media reporting and suicidality are associated. However, there is a risk of reporting bias. More research is available about how irresponsible media reports can provoke suicidal behaviours (the ‘Werther effect’) and less about protective effect media can have (the ‘Papageno effect’). Strong modelling effect of media coverage on suicide is based on age and gender. Media reports are not representative of official suicide data and tend to exaggerate sensational suicides, for example dramatic and highly lethal suicide methods, which are rare in real life. Future studies have to encounter the challenges the global medium Internet will offer in terms of research methods, as it is difficult to define the circulation of news in the Internet either spatially or in time. However, online media can provide valuable innovative qualitative research material. PMID:22470283

A Formative Evaluation of a Social Media Campaign to Reduce Adolescent Dating Violence

PubMed Central

Lambert, Danielle N; Bishop, Lauren E; Guetig, Stephanie

2014-01-01

Background The Emory Jane Fonda Center implemented the Start Strong Atlanta social marketing campaign, “Keep It Strong ATL”, in 2007 to promote the development of healthy adolescent relationships and to foster the prevention of adolescent dating abuse among 11-14 year olds. Objective A formative evaluation was conducted to understand whether messages directed at the target audience were relevant to the program’s relationship promotion and violence prevention goals, and whether the “Web 2.0” social media channels of communication (Facebook, Twitter, YouTube, Flickr, Tumblr, and Pinterest) were reaching the intended audience. Methods Mixed methodologies included qualitative interviews and a key informant focus group, a cross-sectional survey, and web analytics. Qualitative data were analyzed using constant comparative methodology informed by grounded theory. Descriptive statistics were generated from survey data, and web analytics provided user information and traffic patterns. Results Results indicated that the Keep It Strong ATL social marketing campaign was a valuable community resource that had potential for broader scope and greater reach. The evaluation team learned the importance of reaching adolescents through Web 2.0 platforms, and the need for message dissemination via peers. Survey results indicated that Facebook (ranked 6.5 out of 8) was the highest rated social media outlet overall, and exhibited greatest appeal and most frequent visits, yet analytics revealed that only 3.5% of “likes” were from the target audience. These results indicate that the social media campaign is reaching predominantly women (76.5% of viewership) who are outside of the target age range of 11-14 years. Conclusions While the social media campaign was successfully launched, the findings indicate the need for a more focused selection of communication channels, timing of media updates to maximize visibility, balancing message tone and delivery, and incorporating differentiated messaging for the target audiences. Collaboration with parents and community partners is also emphasized in order to expand the campaign’s reach and create more channels to disseminate relationship promotion and dating violence prevention messaging to the intended audience. PMID:25405494

Pt Nanostructures/N-Doped Carbon hybrid, an Efficient Catalyst for Hydrogen Evolution/Oxidation Reactions: Enhancing its Base Media Activity through Bifunctionality of the Catalyst.

PubMed

Barman, Sudip; Kundu, Manas; Bhowmik, Tanmay; Mishra, Ranjit

2018-06-04

Design and synthesis of active catalyst for HER/HOR are important for the development of hydrogen based renewable technologies. We report synthesis of Pt nanostructures-N-doped carbon hybrid (Pt-(PtO2)-NSs/C) for HER/HOR applications. The HER activity of this Pt-(PtOx)-NSs/C catalyst is 4 and 6.5 times better than commercial Pt/C in acid and base. The catalyst exhibits a current density of 10 mA/cm2 at overpotentials of 5 and 51 mV with tafel slopes of 29 and 64mV/dec in in 0.5 M H2SO4 and 0.5 M KOH. This catalyst also showed superior HOR activity at all pH values. The HER/HOR activity of Pt-(PtOx)-NSs/C and PtOx-free Pt-Nanostructures/C (PtNSs/C) catalysts are comparable in acid. The presence of PtOx in Pt-(PtOx)-NSs/C makes this Pt-catalyst more HER/HOR active in base media. The activity of Pt-(PtOx)NSs/C catalyst is 5 fold higher than that of PtNSs/C catalyst in basic medium although their activity is comparable in acid. Hydrogen binding energy and oxophilicity are the two equivalent descriptors for HER/HOR in basic media. We propose a bi-functional mechanism for the enhanced alkaline HER/HOR activity of Pt(PtOx)-NSs/C catalyst. In bi-functional Pt-(PtOx)-NSs/C catalyst, PtOx provide an active site for OH- adsorption to form OHads which reacts with hydrogen intermediate (Hads), present at neighbouring Pt sites to form H2O leading to enhancement of HOR activity in basic medium This work may provide opportunity to develop catalysts for various renewable energy technologies. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Media reporting on research presented at scientific meetings: more caution needed.

PubMed

Woloshin, Steven; Schwartz, Lisa M

2006-06-05

To examine media stories on research presented at scientific meetings to see if they reported basic study facts and cautions, and whether they were clear about the preliminary stage of the research. Three physicians with clinical epidemiology training analysed front-page newspaper stories (n = 32), other newspaper stories (n = 142), and television/radio stories (n = 13) identified in LexisNexis and ProQuest searches for research reports from five scientific meetings in 2002-2003 (American Heart Association, 14th Annual International AIDS Conference, American Society of Clinical Oncology, Society for Neuroscience, and the Radiological Society of North America). Media reporting of basic study facts (size, design, quantification of results); cautions about study designs with intrinsic limitations (animal/laboratory studies, studies with < 30 people, uncontrolled studies, controlled but not randomised studies) or downsides (adverse effects in intervention studies); warnings about the preliminary stage of the research presented at scientific meetings. 34% of the 187 stories did not mention study size, 18% did not mention study design (another 35% were so ambiguous that expert readers had to guess the design), and 40% did not quantify the main result. Only 6% of news stories about animal studies mentioned their limited relevance to human health; 21% of stories about small studies noted problems with the precision of the finding; 10% of stories about uncontrolled studies noted it was not possible to know if the outcome really related to the exposure; and 19% of stories about controlled but not randomised studies raised the possibility of confounding. Only 29% of the 142 news stories on intervention studies noted the possibility of any potential downside. Twelve stories mentioned a corresponding "in press" medical journal article; two of the remaining 175 noted that findings were unpublished, might not have undergone peer review, or might change. News stories about scientific meeting research presentations often omit basic study facts and cautions. Consequently, the public may be misled about the validity and relevance of the science presented.

Illicit drugs and the media: models of media effects for use in drug policy research.

PubMed

Lancaster, Kari; Hughes, Caitlin E; Spicer, Bridget; Matthew-Simmons, Francis; Dillon, Paul

2011-07-01

Illicit drugs are never far from the media gaze and although identified almost a decade ago as 'a new battleground' for the alcohol and other drug (AOD) field there has been limited research examining the role of the news media and its effects on audiences and policy. This paper draws together media theories from communication literature to examine media functions. We illustrate how each function is relevant for media and drugs research by drawing upon the existing literature examining Australian media coverage during the late 1990s of escalating heroin-related problems and proposed solutions. Media can influence audiences in four key ways: by setting the agenda and defining public interest; framing issues through selection and salience; indirectly shaping individual and community attitudes towards risk; and feeding into political debate and decision making. Each has relevance for the AOD field. For example, media coverage of the escalating heroin-related problems in Australia played a strong role in generating interest in heroin overdoses, framing public discourse in terms of a health and/or criminal issue and affecting political decisions. Implications AND CONCLUSION: Media coverage in relation to illicit drugs can have multifarious effects. Incorporating media communication theories into future research and actions is critical to facilitate understanding of the short- and long-term impacts of media coverage on illicit drugs and the avenues by which the AOD field can mitigate or inform future media debates on illicit drugs. © 2010 Australasian Professional Society on Alcohol and other Drugs.

Media Coverage of Alcohol Issues: A Critical Political Economy Framework—A Case Study from Ireland

PubMed Central

Mercille, Julien

2017-01-01

There is a growing literature on news media representations of alcohol-related issues. However, current scholarship has neglected critical political economic frameworks to interpret media coverage of alcohol. This paper presents such a framework that conceives of news organisations as corporations that share the values and interests of political and economic elites. The media are thus expected to present viewpoints that are more aligned with the alcohol industry than the scientific consensus on public health policy would warrant. The media are also expected, but to a lesser extent, to present a certain amount of support for public health perspectives because these are supported by a few socioeconomic elite groups (the medical professions, progressive politicians). The case of Ireland from 2012 to 2017 illustrates the framework empirically. Four main newspapers’ coverage of the Public Health (Alcohol) Bill and related policies is examined. Results show that, overall, 44.0% of articles support public health measures and 56.0% are opposed or remain neutral. It is argued that the media are not strong proponents of public health for multiple reasons: there are more articles opposed to or neutral toward public health measures than supporting them; the number of supportive articles remains relatively small and there are still many pieces presenting drinks industry views; there are virtually no calls in the media for stronger measures; supportive coverage is partially explained by the pub owners lobby’s support for minimum unit pricing; the media often downplay or ignore the negative consequences of alcohol, such as its role in accidents; many news articles normalise drinking and promote events sponsored by the industry; there is not a single Irish journalist covering alcohol issues systematically; and other policy issues that are prioritised by elites receive multiple times more media coverage than public health measures. In short, the media reflect the views of the political and economic establishment on public health measures: there is some support from the medical professions and progressive politicians, but overall, there is a clear reluctance to support strong public health strategies. One main recommendation for public health advocates to promote their perspectives is to diversify the mass media and make them less commercial in nature, as well as to engage with non-corporate, so-called progressive “alternative media” outlets. PMID:28621753

[Regeneration of autologous tissue-engineered cartilage by using basic-fibroblast growth factor in vitro culture].

PubMed

Ding, Xiao-bang; Cheng, Ning-xin; Chen, Bing; Xia, Wan-yao; Cui, Lei; Liu, Wei; Cao, Yi-lin

2004-05-01

To investigate the effect of the basic fibroblast growth factor (b-FGF) to regenerate an autologous tissue-engineered cartilage in vitro. The Cells were harvested from the elastic auricular cartilage of swine,and were plated at the concentration of 1 x 10(4) cells/cm2 , studied in vitro at two different media enviroments: Group I contained Ham's F-12 with supplements and b-FGF, Group II contained Ham's F-12 only with supplements. The passage 2 cells (after 12.75 +/- 1.26 days) were harvested and mixed with 30% pluronic F-127/Ham's F-12 at the concentration of 50 x 10(6) cells/ml. It was injected subcutaneously at 0.5 ml per implant. The implants were harvested 8 weeks after the vivo culture and examined with the histological stains. The chondrocytes displayed morphologically similar to the fibroblasts in the media containing basic-FGF. The number of cell doublings (after 12.75 +/- 1.26 days) in vitro culture was as the following: Group I, 70; Group II, 5.4. Eight 8 weeks after the vivo autologous implantation, the average weight (g) and volume (cm3) in each group was as the following: Group I, 0.371 g/0.370 cm3 Group II, 0.179 g/0.173 cm3 (P < 0.01). With the b-FGF in vitro culture, the cells were expanded by 70 times after 2 weeks. Histologically, all of the engineered cartilage in the two groups were similar to the native elastic cartilage. These results indicate that the basic-FGF could be used positively to enhance the quality and quantity of the seeding cells for the generation of the well-engineered cartilage.

Detailed study on the statistical properties of optimized phase distribution in focusing light through turbid media

NASA Astrophysics Data System (ADS)

Zhang, Xicheng; Fang, Longjie; Zuo, Haoyi; Du, Jinglei; Gao, Fuhua; Pang, Lin

2018-07-01

It is studied in detail that whether the optimized phase distributions obtained from different approaches have relations in focusing light through turbid media. A view is proposed that there exists a strong correlation among the optimized phase distributions from different approaches. The numeric simulations and experiments indicate that the larger the number of segments is, the greater the correlation coefficient of optimized phase distributions from different approaches will be. This study might give an important insight into the essence of focusing light through turbid media by phase modulation.

The Semantic-Pragmatics Interface and Island Constraints in Chinese

ERIC Educational Resources Information Center

Jin, Dawei

2016-01-01

This thesis is about strong island effects and intervention effects. Strong island effects are contexts where operator-variable dependencies cannot be established. The paradigmatic cases of strong island violations in Chinese occur in "why"-questions. This thesis explores a basic contrast: "why"-questions fail to be interpreted…

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Media Use, Involvement, and Knowledge of the Gulf War.

ERIC Educational Resources Information Center

Lo, Ven-hwei

1994-01-01

Shows that, under conditions of high involvement, newspaper use correlated more strongly with knowledge than did television news use; and under conditions of low involvement, newspaper use did not correlate more strongly with knowledge than did television news use. Finds contrary results among survey respondents who held extreme attitudes on the…

An Examination of Not-For-Profit Stakeholder Networks for Relationship Management: A Small-Scale Analysis on Social Media.

PubMed

Wyllie, Jessica; Lucas, Benjamin; Carlson, Jamie; Kitchens, Brent; Kozary, Ben; Zaki, Mohamed

2016-01-01

Using a small-scale descriptive network analysis approach, this study highlights the importance of stakeholder networks for identifying valuable stakeholders and the management of existing stakeholders in the context of mental health not-for-profit services. We extract network data from the social media brand pages of three health service organizations from the U.S., U.K., and Australia, to visually map networks of 579 social media brand pages (represented by nodes), connected by 5,600 edges. This network data is analyzed using a collection of popular graph analysis techniques to assess the differences in the way each of the service organizations manage stakeholder networks. We also compare node meta-information against basic topology measures to emphasize the importance of effectively managing relationships with stakeholders who have large external audiences. Implications and future research directions are also discussed.

An Examination of Not-For-Profit Stakeholder Networks for Relationship Management: A Small-Scale Analysis on Social Media

PubMed Central

Carlson, Jamie; Kitchens, Brent; Kozary, Ben; Zaki, Mohamed

2016-01-01

Using a small-scale descriptive network analysis approach, this study highlights the importance of stakeholder networks for identifying valuable stakeholders and the management of existing stakeholders in the context of mental health not-for-profit services. We extract network data from the social media brand pages of three health service organizations from the U.S., U.K., and Australia, to visually map networks of 579 social media brand pages (represented by nodes), connected by 5,600 edges. This network data is analyzed using a collection of popular graph analysis techniques to assess the differences in the way each of the service organizations manage stakeholder networks. We also compare node meta-information against basic topology measures to emphasize the importance of effectively managing relationships with stakeholders who have large external audiences. Implications and future research directions are also discussed. PMID:27711236

Humanitarian crises: what determines the level of emergency assistance? Media coverage, donor interests and the aid business.

PubMed

Olsen, Gorm Rye; Carstensen, Nils; Høyen, Kristian

2003-06-01

This paper proposes a basic hypothesis that the volume of emergency assistance any humanitarian crisis attracts is determined by three main factors working either in conjunction or individually. First, it depends on the intensity of media coverage. Second, it depends on the degree of political interest, particularly related to security, that donor governments have in a particular region. Third, the volume of emergency aid depends on strength of humanitarian NGOs and international organisations present in a specific country experiencing a humanitarian emergency. The empirical analysis of a number of emergency situations is carried out based on material that has never been published before. The paper concludes that only occasionally do the media play a decisive role in influencing donors. Rather, the security interests of Western donors are important together with the presence and strength of humanitarian stakeholders, such as NGOs and international organisations lobbying donor governments.

REVIEWS OF TOPICAL PROBLEMS: Gas lasers with solar excitation

NASA Astrophysics Data System (ADS)

Gordiets, B. F.; Panchenko, Vladislav Ya

1986-07-01

CONTENTS 1. Introduction 703 2. General requirements for laser media using solar excitation 704 3. Lasers with direct excitation by solar light 705 3.1. Basic characteristics of laser media. 3.2. Photodissociation Br2-CO2 lasers. 3.3. Interhalogen molecule lasers. 3.4. Iodine lasers. 3.5. Alkali metal vapor lasers. 4. Lasers with thermal conversion of solar pumping 709 4.1. General considerations. 4.2. CO2 laser with excitation in a black body cavity and with gas flow. 4.3. cw CO2 laser without gas flow. 5. Space laser media with solar excitation 713 5.1. Population inversion of molecular levels in the outer atmosphere of the Earth. 5.2. Laser effect in the atmospheres of Venus and Mars. 5.3. Terrestrial experimental technique for observing infrared emission in the atmospheres of planets. 5.4. Designs for laser systems in the atmospheres of Venus and Mars. 6. Conclusions 717 References 717

Basic Characteristics and Spatial Patterns of Pseudo-Settlements--Taking Dalian as An Example.

PubMed

Gao, Jiaji; Zhang, Yingjia; Li, Xueming

2016-01-20

A person's living behavior patterns are closely related to three types of settlements: real-life settlements, imagined settlements, and pseudo-settlements. The term "pseudo-settlement" (PS) refers to the places that are selectively recorded and represented after the mass media chose and restructure the residence information. As the mass media rapidly develops and people's way of obtaining information gradually change, PS has already become one of the main ways for people to recognize and understand real-life settlements, as well as describe their impressions of imagined settlements. PS also has a profound impact on tourism, employment, investment, migration, real estate development, etc. Thus, the study of PSs has important theoretical and practical significance. This paper proposes to put forward residential quarters where the mass media is displayed as the object of study and establishes the pseudo-settlement index system of Dalian in and elaborate analysis of the concept of PSs. From three aspects, including pseudo-buildings, pseudo-districts and pseudo-culture, this paper uses the ArcGIS 10.0 kernel density (spacial analyst) to analyze and interpret the basic characteristics and spatial patterns of 14 elements of the PS in Dalian. Through systemic clustering analysis, it identifies eight major types of PSs in Dalian. Then it systematically elaborates current situations and characteristics of the spatial pattern of PSs in Dalian, namely: regionally concentrated, widely scattered and blank spaces without pseudo-settlements. Finally, this paper discusses the mechanism of formation of PSs in Dalian.

Basic Characteristics and Spatial Patterns of Pseudo-Settlements—Taking Dalian as An Example

PubMed Central

Gao, Jiaji; Zhang, Yingjia; Li, Xueming

2016-01-01

A person’s living behavior patterns are closely related to three types of settlements: real-life settlements, imagined settlements, and pseudo-settlements. The term “pseudo-settlement” (PS) refers to the places that are selectively recorded and represented after the mass media chose and restructure the residence information. As the mass media rapidly develops and people’s way of obtaining information gradually change, PS has already become one of the main ways for people to recognize and understand real-life settlements, as well as describe their impressions of imagined settlements. PS also has a profound impact on tourism, employment, investment, migration, real estate development, etc. Thus, the study of PSs has important theoretical and practical significance. This paper proposes to put forward residential quarters where the mass media is displayed as the object of study and establishes the pseudo-settlement index system of Dalian in and elaborate analysis of the concept of PSs. From three aspects, including pseudo-buildings, pseudo-districts and pseudo-culture, this paper uses the ArcGIS 10.0 kernel density (spacial analyst) to analyze and interpret the basic characteristics and spatial patterns of 14 elements of the PS in Dalian. Through systemic clustering analysis, it identifies eight major types of PSs in Dalian. Then it systematically elaborates current situations and characteristics of the spatial pattern of PSs in Dalian, namely: regionally concentrated, widely scattered and blank spaces without pseudo-settlements. Finally, this paper discusses the mechanism of formation of PSs in Dalian. PMID:26805859

Study of SF6 gas decomposition products based on spectroscopy technology

NASA Astrophysics Data System (ADS)

Cai, Ji-xing; Na, Yan-xiang; Ni, Wei-yuan; Li, Guo-wei; Feng, Ke-cheng; Song, Gui-cai

2011-08-01

With the rapid development of power industry, the number of SF6 electrical equipment are increasing, it has gradually replaced the traditional insulating oil material as insulation and arc media in the high-voltage electrical equipment. Pure SF6 gas has excellent insulating properties and arc characteristics; however, under the effect of the strong arc, SF6 gas will decompose and generate toxic substances, then corroding electrical equipment, thereby affecting the insulation and arc ability of electrical equipment. If excessive levels of impurities in the gas that will seriously affect the mechanical properties, breaking performance and electrical performance of electrical equipment, it will cause many serious consequences, even threaten the safe operation of the grid. This paper main analyzes the basic properties of SF6 gas and the basic situation of decomposition in the discharge conditions, in order to simulate the actual high-voltage electrical equipment, designed and produced a simulation device that can simulate the decomposition of SF6 gas under a high voltage discharge, and using fourier transform infrared spectroscopy to analyze the sample that produced by the simulation device. The result show that the main discharge decomposition product is SO2F2 (sulfuryl fluoride), the substance can react with water and generate corrosive H2SO4(sulfuric acid) and HF (hydrogen fluoride), also found that the increase in the number with the discharge, SO2F2concentration levels are on the rise. Therefore, the material can be used as one of the main characteristic gases to determine the SF6 electrical equipment failure, and to monitor their concentration levels.

Biosorption of Basic Green 4 from aqueous solution by Ananas comosus (pineapple) leaf powder.

PubMed

Chowdhury, Shamik; Chakraborty, Sagnik; Saha, Papita

2011-06-01

Biosorption characteristics of Ananas comosus (pineapple) leaf powder was investigated for decolorization of Basic Green 4 (BG 4), a cationic dye from its aqueous solutions employing a batch experimental set-up. Parameters that influence the sorption process such as pH, biosorbent dosage, contact time, initial dye concentration and temperature were systematically studied. The optimum conditions for removal of BG 4 were found to be pH 9.0, contact time=150 min, biosorbent dosage=5.0 g L(-1), initial dye concentration=50 mg L(-1). The temperature had a strong influence on the biosorption process. Further, the biosorbent was characterized by Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and Brunauer, Emmett, Teller (BET) surface area and pore size analysis. Experimental biosorption data were modeled by Langmuir, Freundlich and Dubinin-Radushkevich (D-R) isotherms. The biosorption process followed the Langmuir isotherm model with high coefficients of correlation (R(2)>0.99) at different temperatures. The pseudo second order kinetic model fitted well in correlation to the experimental results. Activation energy of the biosorption process (E(a)) was found to be 45.79 kJ mol(-1) by using the Arrhenius equation, indicating chemisorption nature of BG 4 sorption onto pineapple leaf powder. Thermodynamic parameters suggest that the biosorption process is spontaneous and exothermic in nature. Overall, the present findings suggest that this environmentally friendly, efficient and low-cost biosorbent may be useful for the removal of BG 4 from aqueous media. Copyright © 2011 Elsevier B.V. All rights reserved.

A Fractal Study on the Effective Thermal Conductivity of Porous Media

NASA Astrophysics Data System (ADS)

Qin, X.; Cai, J.; Wei, W.

2017-12-01

Thermal conduction in porous media has steadily received attention in science and engineering, for instance, exploiting and utilizing the geothermal energy, developing the oil-gas resource, ground water flow in hydrothermal systems and investigating the potential host nuclear wastes, etc. The thermal conductivity is strongly influenced by the microstructure features of porous media. In this work, based on the fractal characteristics of the grains, a theoretical model of effective thermal conductivity is proposed for saturated and unsaturated porous media. It is found that the proposed effective thermal conductivity solution is a function of geometrical parameters of porous media, such as the porosity, fractal dimension of granular matrix and the thermal conductivity of the grains and pore fluid. The model predictions are compared with existing experimental data and the results show that they are in good agreement with existing experimental data. The proposed model may provide a better understanding of the physical mechanisms of thermal transfer in porous media than conventional models.

Gauge Bosons--The Ties That Bind.

ERIC Educational Resources Information Center

Hill, Christopher T.

1982-01-01

Discusses four basic forces/interactions in nature (strong force, weak force, electromagnetic force and gravity), associated with elementary particles. Focuses on "gauge bosons" (for example, photons), thought to account for strong, weak, and electromagnetic forces. (Author/JN)

Enhance Your Science With Social Media: No ... Really

NASA Astrophysics Data System (ADS)

Goss, H.; Aiken, A. C.; Sams, A.

2016-12-01

The ability to communicate the societal value of basic research to nonacademic audiences is morphing from an optional soft skill to a crucial tool for scientists who are competing over finite or shrinking resources for research. Former National Academy of Sciences President Ralph Cicerone argued as early as 2006 that "scientists themselves must do a better job of communicating directly to the public," taking advantage of "new, non-traditional outlets" on the Internet. Findings suggest that scientists have begun to embrace social media as a viable tool for communicating research and keeping abreast of advancements in their fields. Social media is changing the way that scientists are interacting with each other and with the global community. Scientists are taking to popular social media (Twitter, Facebook, etc.) to challenge weak research, share replication attempts in real time, and counteract hype. Incorporating social media into the different stages of a scientific publication: Accelerates the pace of scientific communication and collaboration Facilitates interdisciplinary collaboration Makes it possible to communicate results to a large and diverse audience Encourages post-publication conversations about findings Accelerates research evaluation Makes science more transparent Amplifies the positive effects of scientists' interactions with more traditional media Our presentation will demonstrate how scientists can use social media as a tool to support their work, collaborate with peers around the world, and advance the cause of science. Information will be presented by communications experts and research librarians in collaboration with scientists who are already active on social media. Content will focus on pragmatic best practices for engaging peers, other stakeholders, promoting science and scientific research, and measuring success.

A second order radiative transfer equation and its solution by meshless method with application to strongly inhomogeneous media

NASA Astrophysics Data System (ADS)

Zhao, J. M.; Tan, J. Y.; Liu, L. H.

2013-01-01

A new second order form of radiative transfer equation (named MSORTE) is proposed, which overcomes the singularity problem of a previously proposed second order radiative transfer equation [J.E. Morel, B.T. Adams, T. Noh, J.M. McGhee, T.M. Evans, T.J. Urbatsch, Spatial discretizations for self-adjoint forms of the radiative transfer equations, J. Comput. Phys. 214 (1) (2006) 12-40 (where it was termed SAAI), J.M. Zhao, L.H. Liu, Second order radiative transfer equation and its properties of numerical solution using finite element method, Numer. Heat Transfer B 51 (2007) 391-409] in dealing with inhomogeneous media where some locations have very small/zero extinction coefficient. The MSORTE contains a naturally introduced diffusion (or second order) term which provides better numerical property than the classic first order radiative transfer equation (RTE). The stability and convergence characteristics of the MSORTE discretized by central difference scheme is analyzed theoretically, and the better numerical stability of the second order form radiative transfer equations than the RTE when discretized by the central difference type method is proved. A collocation meshless method is developed based on the MSORTE to solve radiative transfer in inhomogeneous media. Several critical test cases are taken to verify the performance of the presented method. The collocation meshless method based on the MSORTE is demonstrated to be capable of stably and accurately solve radiative transfer in strongly inhomogeneous media, media with void region and even with discontinuous extinction coefficient.

Social Media Representation of Chronic Cerebrospinal Venous Insufficiency Intervention for Multiple Sclerosis

PubMed Central

Forwell, Susan J.

2016-01-01

Background: We conducted a rigorous review of videos related to multiple sclerosis (MS) and chronic cerebrospinal venous insufficiency (CCSVI) treatment posted by people with MS on one social media website (YouTube) that describe symptoms before and after the surgical procedure, as well as videos presented by health-care professionals (HCPs). Methods: All relevant videos posted from December 2009 to July 2011 were downloaded, viewed, and systematically organized. Categorical data were classified, and dominant messages were gleaned. Results: A total of 1789 videos were extracted. A total of 621 videos by people with MS and 238 by HCPs were included. Eighty-six percent of people with MS anecdotally reported experiencing some improvement in at least one symptom. The most common message was that “CCSVI is not a miracle but worth trying.” Most HCPs posting videos recommended the procedure but called for continued research. Conclusions: Social media are conveying an anecdotal favorable message about CCSVI treatment for MS. The relative absence of videos offering a negative or more balanced perspective is a concern. Social persuasion through these videos creates a strong positive impression of CCSVI treatment, but the videos do not acknowledge the lack of supporting scientific evidence and the possible role of the placebo effect. Given the strong influence of social media on health-care decision making, researchers and clinicians should actively use social media to reach out to people with MS and describe the state of the evidence for MS treatments, both positive and negative. PMID:27134577

Flow turbulence topology in regular porous media: From macroscopic to microscopic scale with direct numerical simulation

NASA Astrophysics Data System (ADS)

Chu, Xu; Weigand, Bernhard; Vaikuntanathan, Visakh

2018-06-01

Microscopic analysis of turbulence topology in a regular porous medium is presented with a series of direct numerical simulation. The regular porous media are comprised of square cylinders in a staggered array. Triply periodic boundary conditions enable efficient investigations in a representative elementary volume. Three flow patterns—channel with sudden contraction, impinging surface, and wake—are observed and studied quantitatively in contrast to the qualitative experimental studies reported in the literature. Among these, shear layers in the channel show the highest turbulence intensity due to a favorable pressure gradient and shed due to an adverse pressure gradient downstream. The turbulent energy budget indicates a strong production rate after the flow contraction and a strong dissipation on both shear and impinging walls. Energy spectra and pre-multiplied spectra detect large scale energetic structures in the shear layer and a breakup of scales in the impinging layer. However, these large scale structures break into less energetic small structures at high Reynolds number conditions. This suggests an absence of coherent structures in densely packed porous media at high Reynolds numbers. Anisotropy analysis with a barycentric map shows that the turbulence in porous media is highly isotropic in the macro-scale, which is not the case in the micro-scale. In the end, proper orthogonal decomposition is employed to distinguish the energy-conserving structures. The results support the pore scale prevalence hypothesis. However, energetic coherent structures are observed in the case with sparsely packed porous media.

Social Media Representation of Chronic Cerebrospinal Venous Insufficiency Intervention for Multiple Sclerosis.

PubMed

Ghahari, Setareh; Forwell, Susan J

2016-01-01

We conducted a rigorous review of videos related to multiple sclerosis (MS) and chronic cerebrospinal venous insufficiency (CCSVI) treatment posted by people with MS on one social media website (YouTube) that describe symptoms before and after the surgical procedure, as well as videos presented by health-care professionals (HCPs). All relevant videos posted from December 2009 to July 2011 were downloaded, viewed, and systematically organized. Categorical data were classified, and dominant messages were gleaned. A total of 1789 videos were extracted. A total of 621 videos by people with MS and 238 by HCPs were included. Eighty-six percent of people with MS anecdotally reported experiencing some improvement in at least one symptom. The most common message was that "CCSVI is not a miracle but worth trying." Most HCPs posting videos recommended the procedure but called for continued research. Social media are conveying an anecdotal favorable message about CCSVI treatment for MS. The relative absence of videos offering a negative or more balanced perspective is a concern. Social persuasion through these videos creates a strong positive impression of CCSVI treatment, but the videos do not acknowledge the lack of supporting scientific evidence and the possible role of the placebo effect. Given the strong influence of social media on health-care decision making, researchers and clinicians should actively use social media to reach out to people with MS and describe the state of the evidence for MS treatments, both positive and negative.

Media and health must forge a partnership.

PubMed

Ling, J C

1986-03-01

The objective of health for all requires use of all available means--traditional and modern--to reach the population and mobilize communities. The mass media have particular potential for breaking down class barriers and reaching large numbers. However, many media campaigns have been haphazard, without attention to the many determinants of health behavior or other program aspects. Media activity that is not part of a package of programmed activities, including interpersonal follow-up with clearly defined objectives and comprehensive strategy, is ineffective. Media personnel generally recognize their social responsibility in the development process. The media can confer status to a social issue and reinforce social norms. The World Health Organization Expert Committee on Health Education has identified the following roles of the mass media in the field of health: help strengthen political will by appealing to policy makers; raise general health consciousness and clarify options concerning actions that have a strong bearing on health; inform decision makers and the public about the latest developments in the health sciences; help deliver technical health message to the public; and foster community involvement by reflecting public opinion, encouraging dialogue, and facilitating feedback from the community.

Pore size distribution effect on rarefied gas transport in porous media

NASA Astrophysics Data System (ADS)

Hori, Takuma; Yoshimoto, Yuta; Takagi, Shu; Kinefuchi, Ikuya

2017-11-01

Gas transport phenomena in porous media are known to strongly influence the performance of devices such as gas separation membranes and fuel cells. Knudsen diffusion is a dominant flow regime in these devices since they have nanoscale pores. Many experiments have shown that these porous media have complex structures and pore size distributions; thus, the diffusion coefficient in these media cannot be easily assessed. Previous studies have reported that the characteristic pore diameter of porous media can be defined in light of the pore size distribution; however, tortuosity factor, which is necessary for the evaluation of diffusion coefficient, is still unknown without gas transport measurements or simulations. Thus, the relation between pore size distributions and tortuosity factors is required to obtain the gas transport properties. We perform numerical simulations to prove the relation between them. Porous media are numerically constructed while satisfying given pore size distributions. Then, the mean-square displacement simulation is performed to obtain the tortuosity factors of the constructed porous media.. This paper is based on results obtained from a project commissioned by the New Energy and Industrial Development Organization (NEDO).

Testing Direct and Indirect Effects of Identity, Media Use, Cognitions, and Conversations on Self-Reported Physical Activity Among a Sample of Hispanic Adults.

PubMed

Wirtz, John G; Wang, Zongyuan; Kulpavarapos, Supathida

2017-03-01

This article presents the results of a study testing the direct and indirect effects of identity, media use, cognitions and conversations on physical activity (PA). The study was guided by the O-S-O-R model (Markus & Zajonc, 1985), and it used data collected from a sample of Hispanic adults (N = 268) living in the U.S. Southwest. Exercise identity and ethnic identity were defined as pre-orientations (O 1 ); use of PA-related media content was defined as the stimulus (S); reflective integration and conversations about PA-related media were post-orientations (O 2 ); and self-reported physical activity was the behavioral response (R). Structural equation modeling was used to analyze the data, and several compelling results emerged. Exercise identity had a significant positive direct effect on PA and PA-related media use, as well as a significant positive indirect effect on conversations about PA-related media. PA-related media use exerted a strong and significant positive effect on conversations about PA-related media, as well as a significant positive indirect effect on PA. Finally, conversations about PA-related media content had a significant positive direct effect on PA. The results indicate that identity acts as a filter influencing what media content are selected and that cognitions and conversations about media content can serve as a link between media use and health behavior. Key words: O-S-O-R model, physical activity, Hispanic adults, identity, media use, conversation.

Emotional Feedback and the Viral Spread of Social Media Messages About Autism Spectrum Disorders

PubMed Central

2016-01-01

Objective. To determine whether exchanges of emotional language between health advocacy organizations and social media users predict the spread of posts about autism spectrum disorders (ASDs). Methods. I created a Facebook application that tracked views of ASD advocacy organizations' posts between July 19, 2011, and December 18, 2012. I evaluated the association between exchanges of emotional language and viral views of posts, controlling for additional characteristics of posts, the organizations that produced them, the social media users who viewed them, and the broader social environment. Results. Exchanges of emotional language between advocacy organizations and social media users are strongly associated with viral views of posts. Conclusions. Social media outreach may be more successful if organizations invite emotional dialogue instead of simply conveying information about ASDs. Yet exchanges of angry language may contribute to the viral spread of misinformation, such as the rumor that vaccines cause ASDs. PMID:27196641

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Emotional Feedback and the Viral Spread of Social Media Messages About Autism Spectrum Disorders.

PubMed

Bail, Christopher A

2016-07-01

To determine whether exchanges of emotional language between health advocacy organizations and social media users predict the spread of posts about autism spectrum disorders (ASDs). I created a Facebook application that tracked views of ASD advocacy organizations' posts between July 19, 2011, and December 18, 2012. I evaluated the association between exchanges of emotional language and viral views of posts, controlling for additional characteristics of posts, the organizations that produced them, the social media users who viewed them, and the broader social environment. Exchanges of emotional language between advocacy organizations and social media users are strongly associated with viral views of posts. Social media outreach may be more successful if organizations invite emotional dialogue instead of simply conveying information about ASDs. Yet exchanges of angry language may contribute to the viral spread of misinformation, such as the rumor that vaccines cause ASDs.

Diffractive Hyperbola of a Skin Layer

NASA Astrophysics Data System (ADS)

Yakubov, V. P.; Vaiman, E. V.; Shipilov, S. È.; Prasath, A. K.

2018-03-01

Based on an analysis of physics of the phase transition from the quasistatic state field to the running wave field of elementary electric and magnetic dipoles located in absorbing media, it is concluded that the skin layer is formed at the boundary of this phase transition. The possibility is considered of obtaining the diffractive hyperbola of the skin layer and its subsequent application for sensing of objects in strongly absorbing media.

When New Media Meet the Strong Web of Connected Learning Environments: A New Vision of Progressive Education in the Digital Age

ERIC Educational Resources Information Center

Nam, Chaebong

2013-01-01

This paper shows how the legacy of Jane Addams' socialized education can live on in today's progressive education, especially in the digital age. Discussion is drawn from a case study of an anti-underage drinking campaign conducted by urban youth of color in an afterschool program. The media ecology environment in the campaign--the integrated…

Engaging Students in a Large-Enrollment Physics Class Using an Academically Focused Social Media Platform

NASA Astrophysics Data System (ADS)

Gavrin, Andy; Lindell, Rebecca

2017-03-01

There are many reasons for an instructor to consider using social media, particularly in a large introductory course. Improved communications can lessen the sense of isolation some students feel in large classes, and students may be more likely to respond to faculty announce-ments in a form that is familiar and comfortable. Furthermore, many students currently establish social media sites for their classes, without the knowledge or participation of their instructors. Such "shadow" sites can be useful, but they can also become distributors of misinformation, or venues for inappropriate or disruptive discussions. CourseNetworking (CN) is a social media platform designed for the academic environment. It combines many features common among learning management systems (LMS's) with an interface that looks and feels more like Facebook than a typical academic system. We have recently begun using CN as a means to engage students in an introductory calculus-based mechanics class, with enrollments of 150-200 students per semester. This article presents basic features of CN, and details our initial experiences and observations.

Analogies between the torque-free motion of a rigid body about a fixed point and light propagation in anisotropic media

NASA Astrophysics Data System (ADS)

Bellver-Cebreros, Consuelo; Rodriguez-Danta, Marcelo

2009-03-01

An apparently unnoticed analogy between the torque-free motion of a rotating rigid body about a fixed point and the propagation of light in anisotropic media is stated. First, a new plane construction for visualizing this torque-free motion is proposed. This method uses an intrinsic representation alternative to angular momentum and independent of the modulus of angular velocity ω. The equivalence between this plane construction and the well-known Poinsot's three-dimensional graphical procedure is also shown. From this equivalence, analogies have been found between the general plane wave equation (relation of dispersion) in anisotropic media and basic equations of torque-free motion of a rigid body about a fixed point. These analogies allow reciprocal transfer of results between optics and mechanics and, as an example, reinterpretation of the internal conical refraction phenomenon in biaxial media is carried out. This paper is intended as an interdisciplinary application of analogies for students and teachers in the context of intermediate physics courses at university level.

Radiological Dispersion Devices and Basic Radiation Science

NASA Astrophysics Data System (ADS)

Bevelacqua, Joseph John

2010-05-01

Introductory physics courses present the basic concepts of radioactivity and an overview of nuclear physics that emphasizes the basic decay relationship and the various types of emitted radiation. Although this presentation provides insight into radiological science, it often fails to interest students to explore these concepts in a more rigorous manner. One reason for limited student interest is the failure to link the discussion to topics of current interest. The author has found that presenting this material with a link to radiological dispersion devices (RDDs), or dirty bombs, and their associated health effects provides added motivation for students. The events of Sept. 11, 2001, and periodic media focus on RDDs heighten student interest from both a scientific curiosity as well as a personal protection perspective. This article presents a framework for a more interesting discussion of the basics of radiation science and their associated health effects. The presentation can be integrated with existing radioactivity lectures or added as a supplementary or enrichment activity.

A Multi-Media CAI Terminal Based upon a Microprocessor with Applications for the Handicapped.

ERIC Educational Resources Information Center

Brebner, Ann; Hallworth, H. J.

The design of the CAI interface described is based on the microprocessor in order to meet three basic requirements for providing appropriate instruction to the developmentally handicapped: (1) portability, so that CAI can be taken into the customary learning environment; (2) reliability; and (3) flexibility, to permit use of new input and output…

Rating the YouTube Indian: Viewer Ratings of Native American Portrayals on a Viral Video Site

ERIC Educational Resources Information Center

Kopacz, Maria A.; Lawton, Bessie Lee

2011-01-01

Online outlets for user-generated content (UGC) like YouTube have created environments for alternative depictions of marginalized groups, as UGC can be contributed by anyone with basic technology access. Preliminary findings on UGC relating to Native Americans confirm some favorable departures from the distortions prevalent in the old media. The…

Using Portable Media Players (iPod) to Support Electronic Course Materials during a Field-Based Introductory Geology Course

ERIC Educational Resources Information Center

Elkins, Joe T.

2009-01-01

Electronic course materials, such a videos, PowerPoint presentations, and animations, have become essential educational tools in classroom-based geoscience courses to enhance students' introduction to basic geological concepts. However, during field trips, the ability to offer students these electronic conceptual supports is lacking where students…

Earthquake prediction research at the Seismological Laboratory, California Institute of Technology

USGS Publications Warehouse

Spall, H.

1979-01-01

Nevertheless, basic earthquake-related information has always been of consuming interest to the public and the media in this part of California (fig. 2.). So it is not surprising that earthquake prediction continues to be a significant reserach program at the laboratory. Several of the current spectrum of projects related to prediction are discussed below.

College Football and Public Crisis: Appropriate Actions and Justifications after the Kennedy Assassination.

ERIC Educational Resources Information Center

Brown, Robert S.

This paper contends that domestic response to John F. Kennedy's assassination took two basic forms in the United States: active crisis management and retreat. According to the paper, while government, churches, and the media engaged in active crisis management, businesses and schools closed, and the public retreated to mourn rather than to…

Toward an Innovative, Basic Program Model for the Improvement of Professional Instruction in Dental Education: A Review of the Literature.

ERIC Educational Resources Information Center

Wulf, Kathleen M.; And Others

1980-01-01

An analysis of the massive amount of literature pertaining to the improvement of professional instruction in dental education resulted in the formation of a comprehensive model of 10 categories, including Delphi technique; systems approach; agencies; workshops; multi-media, self-instruction; evaluation paradigms, measurement, courses, and…

Captioned Media for Hearing-Impaired Youngsters: What Parents Need to Know.

ERIC Educational Resources Information Center

Posell, Annette

The manual is intended to assist parents in improving the quality of television viewing for their hearing impaired children. Basic concepts associated with the technology of captioning (e.g., open and closed captions and script editing) are described, and information and suggestions are offered that can make caption reading easier for children.…

Actions Speak Louder than Numbers. ICDI Annual Report 2012

ERIC Educational Resources Information Center

International Child Development Initiatives (NJ1), 2012

2012-01-01

In the past years there has been a growing call for (financial) transparency of developmental aid organizations. The general public, or maybe better put: the popular media, are demanding information on cost efficiency and impact of projects. Development aid needs to prove its worth, that's what it basically boils down to. Of course there is…

Simple Shear Response of a Hyperelastic Dielectric Media Revisited

DTIC Science & Technology

2014-09-01

of continua. 2nd ed. New York: Krieger ; 1980. 2. Ani W, Maugin GA. Basic equations for shocks in nonlinear electroelastic materials. J Acoust. Soc...US ARMY ARDEC E BAKER 3 (PDF) US ARMY RSRCH OFC R ANTHENIEN J MYERS D STEPP 1 (PDF) UNIV OF MD COLLEGE PARK P CHUNG 4 (PDF) JOHNS HOPKINS UNIV L

Sand Type Filters for Swimming Pools. Standard No. 10, Revised October, 1966.

ERIC Educational Resources Information Center

National Sanitation Foundation, Ann Arbor, MI.

Sand type filters are covered in this standard. The filters described are intended to be designed and used specifically for swimming pool water filtration, both public and residential. Included are the basic components which are a necessary part of the sand type filter such as filter housing, upper and lower distribution systems filter media,…

SMEs and Electronic Commerce: A Departure from the Traditional Prioritisation of Training?

ERIC Educational Resources Information Center

Barry, Helen; Milner, Brigid

2002-01-01

A survey of 56 small/medium-sized Irish enterprises showed that 46% were highly proficient in electronic commerce, 42% were at the basic level. Media pressure significantly influenced adoption. In 40% of firms, owner-managers were the driving force. E-commerce was not yet business critical and relevant training was not yet a comprehensive…

48 CFR 927.409 - Solicitation provisions and contract clauses. (DOE coverage-paragraphs (a), (h), (s), and (t))

Code of Federal Regulations, 2010 CFR

2010-10-01

... rather than paragraph (d)(3) in contracts for basic or applied research with educational institutions... which are data comprising a series of instructions, rules, routines, or statements, regardless of the media in which recorded, that allow or cause a computer to perform a specific operation or series of...

48 CFR 927.409 - Solicitation provisions and contract clauses. (DOE coverage-paragraphs (a), (h), (s), and (t))

Code of Federal Regulations, 2014 CFR

2014-10-01

... rather than paragraph (d)(3) in contracts for basic or applied research with educational institutions... which are data comprising a series of instructions, rules, routines, or statements, regardless of the media in which recorded, that allow or cause a computer to perform a specific operation or series of...

48 CFR 927.409 - Solicitation provisions and contract clauses. (DOE coverage-paragraphs (a), (h), (s), and (t))

Code of Federal Regulations, 2013 CFR

2013-10-01

... rather than paragraph (d)(3) in contracts for basic or applied research with educational institutions... which are data comprising a series of instructions, rules, routines, or statements, regardless of the media in which recorded, that allow or cause a computer to perform a specific operation or series of...

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48 CFR 927.409 - Solicitation provisions and contract clauses. (DOE coverage-paragraphs (a), (h), (s), and (t))

Code of Federal Regulations, 2012 CFR

2012-10-01

... rather than paragraph (d)(3) in contracts for basic or applied research with educational institutions... which are data comprising a series of instructions, rules, routines, or statements, regardless of the media in which recorded, that allow or cause a computer to perform a specific operation or series of...

48 CFR 927.409 - Solicitation provisions and contract clauses. (DOE coverage-paragraphs (a), (h), (s), and (t))

Code of Federal Regulations, 2011 CFR

2011-10-01

... rather than paragraph (d)(3) in contracts for basic or applied research with educational institutions... which are data comprising a series of instructions, rules, routines, or statements, regardless of the media in which recorded, that allow or cause a computer to perform a specific operation or series of...

Creativity through a Rhetorical Lens: Implications for Schooling, Literacy and Media Education

ERIC Educational Resources Information Center

Banaji, Shakuntala; Burn, Andrew

2007-01-01

This article, which is speculative in outlook and emerges from an extended literature review on this subject, takes as its basic premise the notion that the idea of "creativity"--whether in relation to literacy, schooling or the economy, is constructed as a series of rhetorical claims. These rhetorics of creativity emerge from the contexts of…

Catch the Cloud: User Research on the Chaos Market

ERIC Educational Resources Information Center

Sung, Ji Eun

2012-01-01

New products continue to launch quickly but many of them are converged products. The "new product" is not a completely new thing to consumers and the basic features stay the same. As a result, the added functions or fancy design can't explain why consumers adopt the new media. Past studies have examined perceptions of innovations or user…

Speaking the Language of Today's Digital Natives

ERIC Educational Resources Information Center

Neibling, John

2010-01-01

While most college presidents have mastered many basic tools of the digital environment, such as e-mail, Internet browsing, text messaging, most of them have yet to figure out social media--a glaring omission that remains one of the clearest dividing lines between generations young and old. Though most of them have yet to fully embrace social…

Studying the Impact of Using Multimedia Interactive Programs at Children Ability to Learn Basic Math Skills

ERIC Educational Resources Information Center

Nusir, Sawsan; Alsmadi, Izzat; Al-Kabi, Mohammed; Sharadgah, Fatima

2012-01-01

The continuous inventions and evolutions in all information technology fields open new channels and opportunities to enhance teaching and educational methods. In one side, those may improve the abilities of educators to present information in an interactive and media enhanced formats relative to traditional methods. This may help students or…

Studying the Impact of Using Multimedia Interactive Programs on Children's Ability to Learn Basic Math Skills

ERIC Educational Resources Information Center

Nusir, Sawsan; Alsmadi, Izzat; Al-Kabi, Mohammed; Sharadgah, Fatima

2013-01-01

The continuous inventions and evolutions in all information technology fields open new channels and opportunities to enhance teaching and educational methods. On one side, these may improve the abilities of educators to present information in interactive and media-enhanced formats relative to traditional methods. This may help students or learners…

Examining Ethics in Educational Leadership: Some Basic Thought for Professorial Analysis

ERIC Educational Resources Information Center

Smith, James M.; Ruhl-Smith, Connie

2006-01-01

The topic of professional and corporate ethics is one that is discussed frequently in the general media today. With unindicted and unconvicted ethical violators like Kenneth Lay of Enron and Richard Scrushy of Health South appearing as anathemas to those who study and attempt to incorporate ethical tenets into everyday professional life, debates…

Introduction to Production Technology. The Wisconsin Guide to Local Curriculum Improvement in Industrial Education, K-12.

ERIC Educational Resources Information Center

Loeffler, Gordon

The intent of this field tested instructional package is to acquaint the student with the methods and processes used in the production of goods. Defining behavioral objectives, the course description includes media guide, suggested classroom activities, and sample student evaluation forms as well as the basic information section. The course…

Slow magnetic relaxation in carbonato-bridged dinuclear lanthanide(III) complexes with 2,3-quinoxalinediolate ligands.

PubMed

Vallejo, Julia; Cano, Joan; Castro, Isabel; Julve, Miguel; Lloret, Francesc; Fabelo, Oscar; Cañadillas-Delgado, Laura; Pardo, Emilio

2012-08-11

The coordination chemistry of the 2,3-quinoxalinediolate ligand with different lanthanide(III) ions in basic media in air affords a new family of carbonato-bridged M(2)(III) compounds (M = Pr, Gd and Dy), the Dy(2)(III) analogue exhibiting slow magnetic relaxation behaviour typical of single-molecule magnets.

Racemization of (S)-profen thioesters by strong neutral bases in nonpolar organic solvents: implication for ion-pair kinetic basicity.

PubMed

Chen, Chia-Yin; Chang, Yu-Shang; Lin, Shun-An; Wen, Hui-I; Cheng, Yu-Chi; Tsai, Shau-Wei

2002-05-17

The racemization of (S)-profen 2,2,2-trifluoroethyl thioesters in isooctane with trioctylamine as base was carried out, in which the Hammett equation log(k(int)) = 3.584sigma - 3.745 was successfully applied to describe the electron-withdrawing effect of the substituents to the alpha-phenyl moiety of the thioesters. A combination of neutral strong organic bases with different nonpolar solvents was employed to determine the second-order interconversion constants for the racemization of (S)-naproxen 2,2,2-trifluoroethyl thioester, in which solvent hydrophobicity was found to have less effect on the racemization. Implication for ion-pair kinetic basicity scale for the neutral strong bases in isooctane was further discussed.

[Endothelial dysfunction as a marker of vascular aging syndrome on the background of hypertension, coronary heart disease, gout and obesity].

PubMed

Vatseba, M O

2013-09-01

Under observation were 40 hypertensive patients with coronary heart disease, gout and obesity I and II degree. Patients with hypertension in combination with coronary heart disease, gout and obesity, syndrome of early vascular aging is shown by increased stiffness of arteries, increased peak systolic flow velocity, pulse blood presure, the thickness of the intima-media complex, higher level endotelinemia and reduced endothelial vasodilation. Obtained evidence that losartan in complex combination with basic therapy and metamaks in complex combination with basic therapy positively affect the elastic properties of blood vessels and slow the progression of early vascular aging syndrome.

Fractional vector calculus and fluid mechanics

NASA Astrophysics Data System (ADS)

Lazopoulos, Konstantinos A.; Lazopoulos, Anastasios K.

2017-04-01

Basic fluid mechanics equations are studied and revised under the prism of fractional continuum mechanics (FCM), a very promising research field that satisfies both experimental and theoretical demands. The geometry of the fractional differential has been clarified corrected and the geometry of the fractional tangent spaces of a manifold has been studied in Lazopoulos and Lazopoulos (Lazopoulos KA, Lazopoulos AK. Progr. Fract. Differ. Appl. 2016, 2, 85-104), providing the bases of the missing fractional differential geometry. Therefore, a lot can be contributed to fractional hydrodynamics: the basic fractional fluid equations (Navier Stokes, Euler and Bernoulli) are derived and fractional Darcy's flow in porous media is studied.

Basic Instruction in Physical Education.

ERIC Educational Resources Information Center

Priest, Laurie, Ed.

Chapter 1 of this monograph dealing with basic physical education instruction programs traces the history of physical education in colleges and universities from 1885 to 1985. Physical education programs became strongly entrenched within the higher education curriculum with the sanction of college administrators who recognized a responsibility to…

Factors influencing the development of otitis media among Sicilian children affected by upper respiratory tract infections.

PubMed

Martines, Francesco; Salvago, Pietro; Ferrara, Sergio; Messina, Giuseppe; Mucia, Marianna; Plescia, Fulvio; Sireci, Federico

2016-01-01

Upper respiratory tract infection is a nonspecific term used to describe an acute infection involving the nose, paranasal sinuses, pharynx and larynx. Upper respiratory tract infections in children are often associated with Eustachian tube dysfunction and complicated by otitis media, an inflammatory process within the middle ear. Environmental, epidemiologic and familial risk factors for otitis media (such as sex, socioeconomic and educational factors, smoke exposure, allergy or duration of breastfeeding) have been previously reported, but actually no data about their diffusion among Sicilian children with upper respiratory tract infections are available. To investigate the main risk factors for otitis media and their prevalence in Sicilian children with and without upper respiratory tract infections. A case-control study of 204 children with upper respiratory tract infections who developed otitis media during a 3 weeks monitoring period and 204 age and sex-matched healthy controls. Seventeen epidemiologically relevant features were inventoried by means of standardized questionnaires and skin tests were performed. Univariate analysis and multivariate logistic regression analysis were used to examine the association between risk factors and occurrence of otitis media. Otitis media resulted strongly associated to large families, low parental educational attainment, schooling within the third years of life (p<0.05); children were more susceptible to develop otitis media in the presence of asthma, cough, laryngopharyngeal reflux disease, snoring and apnea (p<0.05). Allergy and urban localization increased the risk of otitis media in children exposed to smoke respectively of 166% and 277% (p<0.05); the joint effect of asthma and presence of pets in allergic population increased the risk of recurrence of 11%, while allergy, cough and runny nose together increased this risk of 74%. Upper respiratory tract infections and otitis media are common childhood diseases strongly associated with low parental educational attainment (p=0.0001), exposure to smoke (p=0.0001), indoor exposure to mold (p=0.0001), laryngopharyngeal reflux disease (p=0.0002) and the lack of breast-feeding (p=0.0014); an increased risk of otitis media recurrences was observed in the presence of allergy, persistent cough and runny nose (p=0.0001). The modification of the identified risk factors for otitis media should be recommended to realize a correct primary care intervention. Copyright © 2015 Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial. Published by Elsevier Editora Ltda. All rights reserved.

Media Reporting of Practice-Changing Clinical Trials in Oncology: A North American Perspective

PubMed Central

Vickers, Michael M.; O’Connor, Stephen; Valdes, Mario; Tang, Patricia A.

2016-01-01

Introduction. Media reporting of clinical trials impacts patient-oncologist interactions. We sought to characterize the accuracy of media and Internet reporting of practice-changing clinical trials in oncology. Materials and Methods. The first media articles referencing 17 practice-changing clinical trials were collected from 4 media outlets: newspapers, cable news, cancer websites, and industry websites. Measured outcomes were media reporting score, social media score, and academic citation score. The media reporting score was a measure of completeness of information detailed in media articles as scored by a 15-point scoring instrument. The social media score represented the ubiquity of social media presence referencing 17 practice-changing clinical trials in cancer as determined by the American Society of Clinical Oncology in its annual report, entitled Clinical Cancer Advances 2012; social media score was calculated from Twitter, Facebook, and Google searches. The academic citation score comprised total citations from Google Scholar plus the Scopus database, which represented the academic impact per clinical cancer advance. Results. From 170 media articles, 107 (63%) had sufficient data for analysis. Cohen’s κ coefficient demonstrated reliability of the media reporting score instrument with a coefficient of determination of 94%. Per the media reporting score, information was most complete from industry, followed by cancer websites, newspapers, and cable news. The most commonly omitted items, in descending order, were study limitations, exclusion criteria, conflict of interest, and other. The social media score was weakly correlated with academic citation score. Conclusion. Media outlets appear to have set a low bar for coverage of many practice-changing advances in oncology, with reports of scientific breakthroughs often omitting basic study facts and cautions, which may mislead the public. The media should be encouraged to use a standardized reporting template and provide accessible references to original source information whenever feasible. Implications for Practice: North American newspapers, cable news, cancer websites, and industry websites were searched for their reporting on 17 practice-changing clinical trials in oncology as highlighted by the American Society of Clinical Oncology in its 2012 annual report, Clinical Cancer Advances. Accuracy of reporting across media platforms was evaluated, and the social media buzz and academic interest generated by each clinical trial was gauged. The findings represent, to the authors’ knowledge, the first systematic effort to appraise the reporting of practice-changing clinical trials in oncology across various media platforms. Use of a standardized reporting template by the media is proposed to reduce flaws in their reporting of clinical trials to the public. PMID:26921290

Generation of highly stable and active strong base sites on organized nano-porous alumina by calcium oxide

NASA Astrophysics Data System (ADS)

Tarlani, Aliakbar; Zarabadi, Mir Pouyan

2013-02-01

In a new approach, strong basic sites has been successfully prepared by loading of calcium nitrate (Ca) on organized nano-porous alumina (ONPA). The prepared CaONPAs were characterized by low-angle X-ray diffraction (XRD), N2 adsorption-desorption isotherms (Brunauer-Emmett-Teller (BET)-Barret-Joyner-Halenda (BJH)), transmission electron microscopy (TEM) and thermogravimetric analysis (TGA). Measuring of the amount of the basic sites and the basicity was carried out by titration method, temperature-programmed desorption (TPD-CO2) and Hammett indicators. Resistance of the basic sites was also tested by washing with water. N2 sorption measurements showed that supporting of the calcium nitrate on ONPA can lead to the bimodal porosity at lower loading. BET surface area of the bare ONPA was 212 m2/g which decreased to 111 m2/g for the 25% of loading of Ca (25CaONPA). The results pointed out that CaONPA samples have basicity between 18.4 < H_ < 22 for 15 and 25% of loadings and well-preserved of the basicity after washing with water especially for 5 and 15% samples. Also no crystalline phase of CaO was observed for 25CaONPA which was calcined at 600 °C.

Social media use among young rheumatologists and basic scientists: results of an international survey by the Emerging EULAR Network (EMEUNET).

PubMed

Nikiphorou, Elena; Studenic, Paul; Ammitzbøll, Christian Gytz; Canavan, Mary; Jani, Meghna; Ospelt, Caroline; Berenbaum, Francis

2017-04-01

To explore perceptions, barriers and patterns of social media (SM) use among rheumatology fellows and basic scientists. An online survey was disseminated via Twitter, Facebook and by email to members of the Emerging European League Against Rheumatism Network. Questions focused on general demographics, frequency and types of SM use, reasons and barriers to SM use. Of 233 respondents (47 countries), 72% were aged 30-39 years, 66% female. 83% were active users of at least one SM platform and 71% were using SM professionally. The majority used SM for communicating with friends/colleagues (79%), news updates (76%), entertainment (69%), clinical (50%) and research (48%) updates. Facebook was the dominant platform used (91%). SM was reported to be used for information (81%); for expanding professional networks (76%); new resources (59%); learning new skills (47%) and establishing a professional online presence (46%). 30% of non-SM users justified not using SM due to lack of knowledge. There was a substantial use of SM by rheumatologists and basic scientists for social and professional reasons. The survey highlights a need for providing learning resources and increasing awareness of the use of SM. This could enhance communication, participation and collaborative work, enabling its more widespread use in a professional manner. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.

Media interventions to promote responsible sexual behavior.

PubMed

Keller, Sarah N; Brown, Jane D

2002-02-01

While the media have been used effectively to promote sexual responsibility in other countries for decades, few such opportunities have been seized in the United States. Mass media may be especially useful for teaching young people about reproductive health because elements of popular culture can be used to articulate messages in young people s terms, in language that won t embarrass them and may even make safe sex more attractive. Media can potentially change the way people think about sex, amidst cultural pressures to have sex at a young age, to have sex forcefully, or to have unsafe sex. Information can be communicated through a variety of channels--small media (e.g., pamphlets, brochures, and the Internet) and mass media--and in a variety of formats--campaigns, news coverage, and educational messages inserted into regular entertainment programming. Several international studies show that exposure to family planning messages through television, radio, and print media are strongly associated with contraceptive use. Domestically, safe sex media campaigns have been associated with increased teen condom use with casual partners, and reductions in the numbers of teenagers reporting sexual activity. Due to private ownership and First Amendment concerns, U.S. sexual health advocates have been working with the commercial media to incorporate subtle health messages into existing entertainment programming.

A Study for Anisotropic Wavefield Analysis with Elastic Layered Models

NASA Astrophysics Data System (ADS)

Yoneki, R.; Mikada, H.; Takekawa, J.

2015-12-01

Subsurface materials are generally anisotropic due to complicated geological conditions, for example, sedimentary materials, fractures reflecting various stress conditions in the past and present in the subsurface. There are many studies on seismic wave propagation in TI (transversely isotropic) and orthorhombic media (e.g., Thomsen, 1986; Alkhalifah, 2000; Bansal and Sen, 2008). In most of those studies, the magnitude of anisotropy is assumed to be weak. Therefore, it may be not appropriate to apply their theories directly to strongly anisotropic subsurface media in seismic exploration. It is necessary to understand the effects of the anisotropy on the behavior of seismic wave propagation in strongly anisotropic media in the seismic exploration. In this study, we investigate the influence of strong anisotropy on received seismic waveforms using three-dimensional numerical models, and verified capability of detecting subsurface anisotropy. Our numerical models contain an isotropic and an anisotropic (VTI, transversely isotropic media with vertical symmetry axis) layer, respectively, in the isotropic background subsurface. Since the difference between the two models is only the anisotropy in the vertical propagation velocity, we could look at the influence of anisotropy in the residual wavefield that is the difference in the observed wavefields of two models. We analyzed the orbital motions of the residual wavefield to see what kind of wave motions the waveforms show. We found that the residual waveforms generated by the anisotropic layer include the orbital motions of shear waves right after the first arrival, i.e., mode conversion from the compressional waves due to the anisotropy. The residual waveforms could be exploited to estimate both the order of anisotropy and the thickness of anisotropic layer in subsurface.

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Framing migration and the process of crimmigration: A systematic analysis of the media representation of unauthorized immigrants in the Netherlands.

PubMed

Brouwer, Jelmer; van der Woude, Maartje; van der Leun, Joanne

2017-01-01

In this article we examine whether the proposal to criminalize illegal stay in the Netherlands was preceded by increased negative media attention for unauthorized immigrants. Using a corpus linguistics approach, we carried out a quantitative discourse analysis of all newspaper articles on unauthorized migrants over a period of 15 years. Our results show that the amount of media coverage actually strongly decreased in the years before the proposal, and this coverage was moreover increasingly less negative. This study thus nuances the somewhat popular belief that unauthorized migrants are increasingly portrayed in negative ways and shows that the framing of migrants as criminals is a more diffuse process in which the media seem to follow rather than fuel politics and policy.

Framing migration and the process of crimmigration: A systematic analysis of the media representation of unauthorized immigrants in the Netherlands

PubMed Central

Brouwer, Jelmer; van der Woude, Maartje; van der Leun, Joanne

2017-01-01

In this article we examine whether the proposal to criminalize illegal stay in the Netherlands was preceded by increased negative media attention for unauthorized immigrants. Using a corpus linguistics approach, we carried out a quantitative discourse analysis of all newspaper articles on unauthorized migrants over a period of 15 years. Our results show that the amount of media coverage actually strongly decreased in the years before the proposal, and this coverage was moreover increasingly less negative. This study thus nuances the somewhat popular belief that unauthorized migrants are increasingly portrayed in negative ways and shows that the framing of migrants as criminals is a more diffuse process in which the media seem to follow rather than fuel politics and policy. PMID:28596711

Media and risky behaviors.

PubMed

Escobar-Chaves, Soledad Liliana; Anderson, Craig A

2008-01-01

Liliana Escobar-Chaves and Craig Anderson investigate two important trends among American youth and examine the extent to which the two trends might be related. First, the authors note that U.S. youth are spending increasing amounts of time using electronic media, with the average American youngster now spending one-third of each day with some form of electronic media. Second, the authors demonstrate that American adolescents are engaging in a number of unhealthful behaviors that impose huge societal costs. Escobar-Chaves and Anderson detail the extent of five critical types of adolescent health risk behaviors identified by the Centers for Disease Control and Prevention-obesity, smoking, drinking, sexual risk taking, and violence. Obesity, the authors note, has become an epidemic among America's young people. Cigarette smoking among adolescents is one of the ten leading health indicators of greatest government concern. Alcohol abuse and alcohol dependence are widespread problems among the nation's youth and are the source of the three leading causes of death among youth. More than 20 percent of American high school students have sexual intercourse for the first time before they reach the age of fourteen. And twelve- to twenty-year-olds perpetrated 28 percent of the single-offender and 41 percent of multiple-offender violent crimes in the United States in 2005. Escobar-Chaves and Anderson present and evaluate research findings on the influence of electronic media on these five risk behaviors among adolescents. Researchers, they say, have found modest evidence that media consumption contributes to the problem of obesity, modest to strong evidence that it contributes to drinking and smoking, and strong evidence that it contributes to violence. Research has been insufficient to find links between heavy media exposure and early sexual initiation. The authors note the need for more large-scale longitudinal studies that specifically examine the cumulative effects of electronic media on risky health behavior.

Is basic personality related to violent and non-violent video game play and preferences?

PubMed

Chory, Rebecca M; Goodboy, Alan K

2011-04-01

Based on the uses and gratifications perspective, personality was expected to relate to violent video game play frequency and game preferences. Participants completed measures of personality and frequency of violent video game play, and identified their most frequently played video games. Results indicate that individuals higher in openness but lower in agreeableness played violent video games more frequently. In addition, more open and extroverted but less agreeable and neurotic individuals generally preferred to play video games that are more violent. Results suggest personality may be more predictive of violent video game use than traditional media use, though the predictive personality dimensions may be consistent across media types.

Use of ultrasmall superparamagnetic iron oxide particles for imaging carotid atherosclerosis.

PubMed

Usman, Ammara; Sadat, Umar; Patterson, Andrew J; Tang, Tjun Y; Varty, Kevin; Boyle, Jonathan R; Armon, Mathew P; Hayes, Paul D; Graves, Martin J; Gillard, Jonathan H

2015-10-01

Based on the results of histopathological studies, inflammation within atherosclerotic tissue is now widely accepted as a key determinant of the disease process. Conventional imaging methods can highlight the location and degree of luminal stenosis but not the inflammatory activity of the plaque. Iron oxide-based MRI contrast media particularly ultrasmall supermagnetic particles of iron oxide have shown potential in assessing atheromatous plaque inflammation and in determining efficacy of antiatherosclerosis pharmacological treatments. In this paper, we review current data on the use of ultrasmall superparamagnetic iron oxides in atherosclerosis imaging with focus on ferumoxtran-10 and ferumoxytol. The basic chemistry, pharmacokinetics and dynamics, potential applications, limitations and future perspectives of these contrast media nanoparticles are discussed.

Social media: the word of mouth revolution.

PubMed

Garven, Joseph J

2010-01-01

Many dental practices today find themselves uncertain about the new social media universe, and in particular with how to relate to younger patients. The power of social networking is its immediate access to the word of mouth exchange of information, and the word of mouth avenue itself is recognized as the single most effective form of advertising. To tap into that phenomenon, begin by investing a small amount of time and effort to understand the basics of social networking. Sign up for Facebook and Twitter. First-hand experience interacting in a social network is the vital first step. The bottom line is simply this: To begin to understand this new arena of communication, you first have to join the conversation.

Filamentation and light bullet formation dynamics in solid-state dielectric media with weak, moderate and strong anomalous group velocity dispersion

NASA Astrophysics Data System (ADS)

Gražulevičiūtė, I.; Garejev, N.; Majus, D.; Jukna, V.; Tamošauskas, G.; Dubietis, A.

2016-02-01

We present a series of measurements, which characterize filamentation dynamics of intense ultrashort laser pulses in the space-time domain, as captured by means of three-dimensional imaging technique in sapphire and fused silica, in the wavelength range of 1.45-2.25 μm, accessing the regimes of weak, moderate and strong anomalous group velocity dispersion (GVD). In the regime of weak anomalous GVD (at 1.45 μm), pulse splitting into two sub-pulses producing a pair of light bullets with spectrally shifted carrier frequencies in both nonlinear media is observed. In contrast, in the regimes of moderate (at 1.8 μm) and strong (at 2.25 μm) anomalous GVD we observe notably different transient dynamics, which however lead to the formation of a single self-compressed quasistationary light bullet with an universal spatiotemporal shape comprised of an extended ring-shaped periphery and a localized intense core that carries the self-compressed pulse.

Spiderman and science: How students' perceptions of scientists are shaped by popular media.

PubMed

Tan, Aik-Ling; Jocz, Jennifer Ann; Zhai, Junqing

2017-07-01

This study addresses the influence of popular media on how young children perceive science and the work of scientists. Using an adapted version of the Draw-A-Scientist Test, 15 classes of fourth graders (9-10 years old) at three different schools in Singapore were sampled ( n = 266). The students' drawings as well as their identification of three sources from which they obtained inspiration for their drawings were analyzed. Our results showed a strong relationship between students' drawings of scientists and their reported sources of inspiration. The results suggest that popular media play a large role in shaping how young children view scientists.

[The pandemic of the experts in the mass media. How to create trust in public communication by acknowledging ignorance and uncertainty].

PubMed

Stollorz, V

2013-01-01

The first influenza pandemic in the twenty-first century is an example of how public trust in expert recommendations can erode if prognostic ability of these experts is suddenly doubted in the mass media. A highly consonant pandemic alarm communicated through the mass media can later cause heightened resonance concerning the appropriateness of the same alarm. In this case a paradoxical effect can develop, in which the same media outlet first paints an overly risky picture of an unfolding pandemic only to later condemn this assessment as alarmist. Can such behavior be considered a defect of journalism? In this article I describe the circumstances under which such media dynamics and "hypes" without trust in expertise are more likely to develop: when there is nontransparent decision making; when uncertainty and nescience of expert judgments are not communicated transparently; when warnings and measures taken are not readily adapted to the evolving risk situation in reality. If these basic principles are recognized in future pandemic risk communication, long-term public trust in scientific expertise can be secured. In this way, despite a public health crisis, a long-lasting break in the credibility of sound science can be avoided.

Panel 5: Microbiology and Immunology Panel

PubMed Central

Murphy, Timothy F.; Chonmaitree, Tasnee; Barenkamp, Stephen; Kyd, Jennelle; Nokso-Koivisto, Johanna; Patel, Janak A.; Heikkinen, Terho; Yamanaka, Noboru; Ogra, Pearay; Swords, W. Edward; Sih, Tania; Pettigrew, Melinda M.

2014-01-01

Objective The objective is to perform a comprehensive review of the literature from January 2007 through June 2011 on the virology, bacteriology, and immunology related to otitis media. Data Sources PubMed database of the National Library of Medicine. Review Methods Three subpanels with co-chairs comprising experts in the virology, bacteriology, and immunology of otitis media were formed. Each of the panels reviewed the literature in their respective fields and wrote draft reviews. The reviews were shared with all panel members, and a second draft was created. The entire panel met at the 10th International Symposium on Recent Advances in Otitis Media in June 2011 and discussed the review and refined the content further. A final draft was created, circulated, and approved by the panel. Conclusion Excellent progress has been made in the past 4 years in advancing an understanding of the microbiology and immunology of otitis media. Advances include laboratory-based basic studies, cell-based assays, work in animal models, and clinical studies. Implications for Practice The advances of the past 4 years formed the basis of a series of short-term and long-term research goals in an effort to guide the field. Accomplishing these goals will provide opportunities for the development of novel interventions, including new ways to better treat and prevent otitis media. PMID:23536533

One Health in social networks and social media.

PubMed

Mekaru, S R; Brownstein, J S

2014-08-01

In the rapidly evolving world of social media, social networks, mobile applications and citizen science, online communities can develop organically and separately from larger or more established organisations. The One Health online community is experiencing expansion from both the bottom up and the top down. In this paper, the authors review social media's strengths and weaknesses, earlier work examining Internet resources for One Health, the current state of One Health in social media (e.g. Facebook, Twitter, YouTube) and online social networking sites (e.g. LinkedIn and ResearchGate), as well as social media in One Health-related citizen science projects. While One Health has a fairly strong presence on websites, its social media presence is more limited and has an uneven geographic distribution. In work following the Stone Mountain Meeting,the One Health Global Network Task Force Report recommended the creation of an online community of practice. Professional social networks as well as the strategic use of social media should be employed in this effort. Finally, One Health-related research projects using volunteers (citizen science) often use social media to enhance their recruitment. Including these researchers in a community of practitioners would take full advantage of their existing social media presence. In conclusion, the interactive nature of social media, combined with increasing global Internet access, provides the One Health community with opportunities to meaningfully expand their community and promote their message.

Multi-fuel driven Janus micromotors.

PubMed

Gao, Wei; D'Agostino, Mattia; Garcia-Gradilla, Victor; Orozco, Jahir; Wang, Joseph

2013-02-11

Here the first example of a chemically powered micromotor that harvests its energy from the reactions of three different fuels is presented. The new Al/Pd Janus microspheres-prepared by depositing a Pd layer on one side of Al microparticles-are propelled efficiently by the thrust of hydrogen bubbles generated from different reactions of Al in strong acidic and alkaline environments, and by an oxygen bubble thrust produced at their partial Pd coating in hydrogen peroxide media. High speeds and long lifetimes of 200 μm s(-1) and 8 min are achieved in strong alkaline media and acidic media, respectively. The ability to autonomously adapt to the presence of a new fuel (surrounding environment), without compromising the propulsion behavior is illustrated. These data also represent the first example of a chemically powered micromotor that propels autonomously and efficiently in alkaline environments (pH > 11) without additional fuels. The ability to use multiple fuel sources to power the same micromotor offers a broader scope of operation and considerable promise for diverse applications of micromotors in different chemical environments. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Pink slimed: Media framing of novel food technologies and risk related to ground beef and processed foods in the U.S.

PubMed

Runge, Kristin K; Chung, Jennifer H; Su, Leona Yi-Fan; Brossard, Dominique; Scheufele, Dietram A

2018-09-01

In March 2012 ABC World News Report aired a series of reports on lean finely textured beef (LFTB) that resulted in a 10-year low for beef prices and the bankruptcy of a major firm that produced LFTB. Using a random sample survey, we tested the effects of the media frame "pink slime" and industry frame "lean finely textured beef," alongside media use, food-related knowledge, trust in food-related institutions and preference for local, fresh, organic and GMO-free foods on perceptions of risk related to ground beef containing pink slime/LFTB, processed foods and red meat. The "pink slime" frame was strongly and positively associated with risk related to ground beef, but not risk related to red meat or processed foods. Attention to news stories about pink slime/LFTB was strongly associated with risk related to ground beef and processed foods, but not red meat. We found varying effects of food values, knowledge and trust on all three dependent variables. Implications are discussed. Copyright © 2018 Elsevier Ltd. All rights reserved.

Kidney tubular-cell secretion of osteoblast growth factor is increased by kaempferol: a scientific basis for "the kidney controlling the bone" theory of Chinese medicine.

PubMed

Long, Mian; Li, Shun-xiang; Xiao, Jiang-feng; Wang, Jian; Lozanoff, Scott; Zhang, Zhi-guang; Luft, Benjamin J; Johnson, Francis

2014-09-01

To study, at the cytological level, the basic concept of Chinese medicine that "the Kidney (Shen) controls the bone". Kaempferol was isolated form Rhizoma Drynariae (Gu Sui Bu, GSB) and at several concentrations was incubated with opossum kidney (OK) cells, osteoblasts (MC3T3 E1) and human fibroblasts (HF) at cell concentrations of 2×10(4)/mL. Opossum kidney cell-conditioned culture media with kaempferol at 70 nmol/L (70kaeOKM) and without kaempferol (0OKM) were used to stimulate MC3T3 E1 and HF proliferation. The bone morphological protein receptors I and II (BMPR I and II) in OK cells were identified by immune-fluorescence staining and Western blot analysis. Kaempferol was found to increase OK cell growth (P<0.05), but alone did not promote MC3T3 E1 or HF cell proliferation. However, although OKM by itself increased MC3T3 E1 growth by 198% (P<0.01), the 70kaeOKM further increased the growth of these cells by an additional 127% (P<0.01). It indicates that the kidney cell generates a previously unknown osteoblast growth factor (OGF) and kaempferol increases kidney cell secretion of OGF. Neither of these media had any significant effect on HF growth. Kaempferol also was found to increase the level of the BMPR II in OK cells. This lends strong support to the original idea that the Kidney has a significant influence over bone-formation, as suggested by some long-standing Chinese medical beliefs, kaempferol may also serve to stimulate kidney repair and indirectly stimulate bone formation.

L. V. Keldysh’s “Ionization in the Field of a Strong Electromagnetic Wave” and modern physics of atomic interaction with a strong laser field

DOE Office of Scientific and Technical Information (OSTI.GOV)

Fedorov, M. V., E-mail: fedorov@gmail.com

2016-03-15

Basic premises, approximations, and results of L.V. Keldysh’s 1964 work on multiphoton ionization of atoms are discussed, as well as its influence on the modern science of the interaction of atomic–molecular systems with a strong laser field.

Fighting A Strong Headwind: Challenges in Communicating The Science of Climate Change

NASA Astrophysics Data System (ADS)

Mann, M. E.

2008-12-01

Communicating science to the public is an intrinsic challenge to begin with. An effective communicator must find ways to translate often technical and complex scientific findings for consumption by an audience unfamiliar with the basic tools and lexicon that scientists themselves take for granted. The challenge is made all the more difficult still when the science has implications for public policy, and the scientists face attack by institutions who judge themselves to be at threat by the implications of scientific findings. Such areas of science include (but certainly are not limited to) evolution, stem cell research, environmental health, and the subject of this talk--climate change. In each of these areas, a highly organized, well funded effort has been mounted to attack the science and the scientists themselves. These attacks are rarely fought in legitimate scientific circles such as the peer-reviewed scientific literature or other scholarly venues, but rather through rhetorically-aimed efforts delivered by media outlets aligned with the views of the attackers, and by politicians and groups closely aligned with special interests. I will discuss various approaches to combating such attacks, drawing upon my own experiences in the public arena with regard to the scientific discourse on climate change.

Shared death: self, sociality and internet group suicide in Japan.

PubMed

Ozawa-De Silva, Chikako

2010-07-01

Existing models for understanding suicide fail to account for the distinctiveness of Internet group suicide, a recent phenomenon in Japan. Drawing from an ethnography of Internet suicide websites, two social commentaries in Japanese popular culture, and the work of developmental psychologist Philippe Rochat, I argue that participation in Internet suicide forums and even the act of Internet group suicide result from both a need for social connectedness and the fear of social rejection and isolation that this need engenders. These needs and fears are especially strong in the case of Japan, where the dominant cultural rhetoric ties selfhood closely to the social self that is the object of perception and experience by others. I show how such an understanding of Internet group suicide helps us to understand some of its basic characteristics, which are otherwise difficult to explain and which have puzzled the Japanese media and popular accounts: the "ordinariness" or casual nature of Internet group suicide, the wish for an easy or comfortable death, the wish to die with others, and the wish to "vanish." Internet group suicide sheds light on questions of Japanese selfhood in modernity and expands our understanding of suicide in Japan in general.

Functionalization of magnetic nanocrystals by oligo (ethylene oxide) chains carrying diazonium and iniferter end groups.

PubMed

Ahmad, Randa; Griffete, Nébéwia; Lamouri, Aazdine; Mangeney, Claire

2013-10-01

The water stability of iron oxide nanoparticles (NPs) is a major issue for biomedical and biological applications. This paper presents a versatile approach for preparing water-soluble iron oxide nanoparticles coated by bifunctional oligo(ethylene oxide) (OEO) chains, carrying on the one side a diazonium end group for covalent grafting at the NP surface and on the other side an iniferter group (diethyl dithiocarbamate) for initiating the growing of poly(methacrylic acid). The nanoparticles were synthesized by coprecipitation in basic media and functionalized in situ by adding the diazonium salt directly in the synthesis medium. Oligo(ethylene oxide) with various chain lengths (from one to three monomer units) was grafted at the NP surface using this approach. The length of the OEO spacer between the NP surface and the iniferter end group was found to be a critical parameter for controlling the colloidal stability of the hybrid NPs. The polymerization time was also shown to strongly influence their colloidal stability, emphasizing the interest to control the interfacial properties of the hybrids for obtaining stable dispersions in water. Copyright © 2013 Elsevier Inc. All rights reserved.

Contemporary Films' Mini Course on Film Study.

ERIC Educational Resources Information Center

Schillaci, Peter

This minicourse on film study can be a unit in English, in arts, or in the humanities. It can help to launch a film study course or complement an introduction to theater. Whatever form it takes, it helps to build a bridge to the student's media environment. Part one, the language of images, utilizes four films which demonstrate the basic elements…

Using Critical Race Theory to Analyze How Disney Constructs Diversity: A Construct for the Baccalaureate Human Behavior in the Social Environment Curriculum

ERIC Educational Resources Information Center

Cappiccie, Amy; Chadha, Janice; Lin, Muh Bi; Snyder, Frank

2012-01-01

Utilizing the basic tenets of critical race theory, the authors draw upon the expertise of multicultural scholars to raise consciousness and facilitate BSW classroom dialogue about microagressions perpetrated in Disney animations. Microaggressions pervade our media partly because they typically operate outside the threshold of the dominant…

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The Use of Modern Media for Rural Education in Developing Countries--The Organisational Problems.

ERIC Educational Resources Information Center

Gutelman, M.

In developing countries, the means of both providing school-age children with a basic education and extending secondary and technical education are adversely affected by the lack of educational facilities. In addition, vast numbers of adults need to be taught to read and write so that they can participate in the process of development. Experts on…

Thinking inside the Box Constrained Creativity and New Technology

ERIC Educational Resources Information Center

Gill, Bradley

2012-01-01

Thinking outside of the box is a standard cliche for creativity. Yet an awareness of the boxed nature of new media can empower young students to think creatively about design. This article is a reflection of one teacher who led a group of young students in a series of lessons based on basic design principles related to technology. It is based on…

Vocabulary Level; One Variable Affecting Learning from Audiovisual Media.

ERIC Educational Resources Information Center

Lewis, Richard F.

Vocabulary level of 10 special students was determined and compared to their supposed level of proficiency on the Functional Basic Word List for Special Pupils (Tudyman and Groelle, 1958). Ss were five educable mentally retarded (EMR) students (CA 9-6 to 12-0, IQ 64-77, MA 6-6 to 9-7) and five matched emotionally disturbed students. Word sampling…

Hello World, It's Me: Bringing the Basic Speech Communication Course into the Digital Age

ERIC Educational Resources Information Center

Kirkwood, Jessica; Gutgold, Nichola D.; Manley, Destiny

2011-01-01

During the past decade, instructors of speech communication have been adapting the introductory speech course to keep up with the television age. Learning units in speech textbooks now teach how to speak well on television, as well as how to interpret speeches in the media. This article argues that the computer age invites adaptation of the…

Radio Daze: Alcohol Ads Tune in Underage Youth.

ERIC Educational Resources Information Center

2003

Through the years and every passing fad, radio has continued to be a basic fact of life for youth in the United States. The Center on Alcohol Marketing and Youth commissioned Virtual Media Resources (VMR) to audit alcohol radio advertising in 2001 and 2002 and to conduct a case study of alcohol radio advertising in December 2002 and January 2003…

Television as a Means of Training Rural Young-Adult Apprentices in Solar Energy.

ERIC Educational Resources Information Center

Edington, Everett D.; Keaton, Laurie

Using television as a means of delivery for an educational program in rural areas and looking at the media preferences of young adults, this study was conducted in a non-metropolitan area of northwestern New Mexico to examine the effectiveness of television and videotape to provide basic principles of solar energy to 15 young apprentices in a…

Making Productive Use of Four Models of School English: A Case Study Revisited

ERIC Educational Resources Information Center

Macken-Horarik, Mary

2014-01-01

At a time when political leaders and media pundits seek to narrow the English curriculum and reduce its knowledge structure to the "basics," it is helpful to revisit the potential of different approaches to learning in English that have evolved over time. In this paper I reflect on the semantic features of personal growth, cultural…

Cable Television and Education: Proceedings of the CATV and Education Conference, May 11-12, 1973.

ERIC Educational Resources Information Center

Cardellino, Earl L., Comp.; Forsythe, Charles G., Comp.

Edited versions of the conference presentations are compiled. The purpose of the meeting was to bring together media specialists and other educators from throughout Pennsylvania to evaluate the basic assumptions underlying the educational use of cable television (CATV) and to share ideas about the ways in which cable could be used to change the…

An Action Learning Approach to the Question: Are Ambulance Response Time Targets Achievable?

ERIC Educational Resources Information Center

Slater, Alan

2017-01-01

In recent years, NHS Ambulance Trusts throughout the UK have consistently failed to achieve their response time targets for both actual and potential life-threatening calls. To avoid a media and public outcry, the NHS response has been to change the basic parameters upon which the response time targets are calculated. An action learning study,…

Barite

USGS Publications Warehouse

Miller, M.

2013-01-01

Barite is the mineralogical name for barium sulfate, which is also referred to as barytes. The most basic marketable product is known as “crude barite,” which is barite that usually has undergone simple beneficiation methods, such as jigging, tabling and washing, or more complex methods, such as flotation, heavy-media separation and magnetic separation. Most barite ore requires some upgrading to minimum purity or density levels.

Medical professionalism: a tale of two doctors.

PubMed

Gorrindo, Tristan; Groves, James E

2011-01-01

The AMA's social media guidelines provide physicians with some basic rules for maintaining professional boundaries when engaging in online activities. Left unanswered are questions about how these guidelines are to be implemented by physicians of different generations. By examining the issues of privacy and technological skill through the eyes of digital natives and digital immigrants, the challenges associated with medical e-professionalism become clear.

Reading as a Pastime: Competition for Time in the Elementary School Classroom.

ERIC Educational Resources Information Center

Fowler, William R.

Reading as a pastime is basic to creativity and intellectual mind expansion as well as to the appropriate development of listening skills. Reasons for the decline of listening and communication skills can be attributed in part to misuse of media, to latch-key children, to decreased support from parents for reading at home, to lack of sufficient…

Science of Food and Cooking: A Non-Science Majors Course

ERIC Educational Resources Information Center

Miles, Deon T.; Bachman, Jennifer K.

2009-01-01

Recent emphasis on the science of food and cooking has been observed in our popular literature and media. As a result of this, a new non-science majors course, The Science of Food and Cooking, is being taught at our institution. We cover basic scientific concepts, which would normally be discussed in a typical introductory chemistry course, in the…

Consumption of Mass Communication--Construction of a Model on Information Consumption Behaviour.

ERIC Educational Resources Information Center

Sepstrup, Preben

A general conceptual model on the consumption of information is introduced. Information as the output of the mass media is treated as a product, and a model on the consumption of this product is developed by merging elements from consumer behavior theory and mass communication theory. Chapter I gives basic assumptions about the individual and the…

Analyzing the Types of Discrimination in Turkish for Foreigners Books

ERIC Educational Resources Information Center

Agcihan, Ezgi; Gokce, Asiye Toker

2018-01-01

Textbooks might be one of the main resources of teachers even today however there have been many changes in education media and Technologies. Especially language course books used in foreign language teaching can be the basic source of learning when the target language is not spoken in the country where the language is thought. Thus, it can be…

Planning Model for School Facilities. A Planning Model for a Secondary School Utilizing a Multi-dimensional Approach for Optimum Flexibility.

ERIC Educational Resources Information Center

Chelmsford Park High School, Chelmsford, MA.

That the construction of a multi-million dollar school plant should be the result of the community's best possible thought, since concrete and steel are not suitable media for necessary future changes in the educational environment, is the basic philosophy of this report. Architects, administrators, teachers, school committeemen, and consultants…

Because Digital Writing Matters: Improving Student Writing in Online and Multimedia Environments

ERIC Educational Resources Information Center

DeVoss, Danielle Nicole; Eidman-Aadahl, Elyse; Hicks, Troy

2010-01-01

As many teachers know, students may be adept at text messaging and communicating online but do not know how to craft a basic essay. In the classroom, students are increasingly required to create web-based or multi-media productions that also include writing. Since writing in and for the online realm often defies standard writing conventions, this…

Dispersion of Nanoparticles in Different Media Importantly Determines the Composition of Their Protein Corona.

PubMed

Strojan, Klemen; Leonardi, Adrijana; Bregar, Vladimir B; Križaj, Igor; Svete, Jurij; Pavlin, Mojca

2017-01-01

Protein corona of nanoparticles (NPs), which forms when these particles come in to contact with protein-containing fluids, is considered as an overlooked factor in nanomedicine. Through numerous studies it has been becoming increasingly evident that it importantly dictates the interaction of NPs with their surroundings. Several factors that determine the compositions of NPs protein corona have been identified in recent years, but one has remained largely ignored-the composition of media used for dispersion of NPs. Here, we determined the effect of dispersion media on the composition of protein corona of polyacrylic acid-coated cobalt ferrite NPs (PAA NPs) and silica NPs. Our results confirmed some of the basic premises such as NPs type-dependent specificity of the protein corona. But more importantly, we demonstrated the effect of the dispersion media on the protein corona composition. The differences between constituents of the media used for dispersion of NPs, such as divalent ions and macromolecules were responsible for the differences in protein corona composition formed in the presence of fetal bovine serum (FBS). Our results suggest that the protein corona composition is a complex function of the constituents present in the media used for dispersion of NPs. Regardless of the dispersion media and FBS concentration, majority of proteins from either PAA NPs or silica NPs coronas were involved in the process of transport and hemostasis. Interestingly, corona of silica NPs contained three complement system related proteins: complement factor H, complement C3 and complement C4 while PAA NPs bound only one immune system related protein, α-2-glycoprotein. Importantly, relative abundance of complement C3 protein in corona of silica NPs was increased when NPs were dispersed in NaCl, which further implies the relevance of dispersion media used to prepare NPs.

Dispersion of Nanoparticles in Different Media Importantly Determines the Composition of Their Protein Corona

PubMed Central

Strojan, Klemen; Leonardi, Adrijana; Bregar, Vladimir B.; Križaj, Igor; Svete, Jurij; Pavlin, Mojca

2017-01-01

Protein corona of nanoparticles (NPs), which forms when these particles come in to contact with protein-containing fluids, is considered as an overlooked factor in nanomedicine. Through numerous studies it has been becoming increasingly evident that it importantly dictates the interaction of NPs with their surroundings. Several factors that determine the compositions of NPs protein corona have been identified in recent years, but one has remained largely ignored—the composition of media used for dispersion of NPs. Here, we determined the effect of dispersion media on the composition of protein corona of polyacrylic acid-coated cobalt ferrite NPs (PAA NPs) and silica NPs. Our results confirmed some of the basic premises such as NPs type-dependent specificity of the protein corona. But more importantly, we demonstrated the effect of the dispersion media on the protein corona composition. The differences between constituents of the media used for dispersion of NPs, such as divalent ions and macromolecules were responsible for the differences in protein corona composition formed in the presence of fetal bovine serum (FBS). Our results suggest that the protein corona composition is a complex function of the constituents present in the media used for dispersion of NPs. Regardless of the dispersion media and FBS concentration, majority of proteins from either PAA NPs or silica NPs coronas were involved in the process of transport and hemostasis. Interestingly, corona of silica NPs contained three complement system related proteins: complement factor H, complement C3 and complement C4 while PAA NPs bound only one immune system related protein, α-2-glycoprotein. Importantly, relative abundance of complement C3 protein in corona of silica NPs was increased when NPs were dispersed in NaCl, which further implies the relevance of dispersion media used to prepare NPs. PMID:28052135

Teenage Pregnancy

MedlinePlus

... Life Family Life Family Life Medical Home Family Dynamics Media Work & Play Getting Involved in Your Community ... she may need help identifying a strong support system. Teens and young girls who have babies can ...

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[Vocational orientation in medical rehabilitation: development of a practice handbook and a homepage as user-oriented media for rehabilitative practice].

PubMed

Lukasczik, M; Löffler, S; Gerlich, C; Wolf, H-D; Neuderth, S

2011-06-01

Vocational orientation in medical rehabilitation has become an important issue in rehabilitation science and practice in Germany. Although a variety of vocationally oriented interventions has been developed in recent years, there is still a lack of consensus with regard to the definition of specific types of interventions as well as relevant criteria (e. g., methods; instruments; duration/frequency; patient groups). Building on preliminary definitions, basic types of vocationally oriented measures/interventions were conceptually modified and refined in the context of a consensual process. 39 experts of various professions were contacted during a 2-stage Delphi survey to evaluate existing definitions of vocationally oriented interventions using key questions. Standardized descriptions of 5 vocationally oriented basic interventions were specified in cooperation with an interdisciplinary panel of experts. Descriptions were published in a workbook and a homepage for researchers and clinicians, which also contain information on the implementation of measures into rehabilitative care as well as good practice examples. The media developed in this project may contribute to the transfer of research results on vocationally oriented rehabilitation into health care practice. © Georg Thieme Verlag KG Stuttgart · New York.

The role of social media in schizophrenia: evaluating risks, benefits, and potential.

PubMed

Torous, John; Keshavan, Matcheri

2016-05-01

Patients with schizophrenia suffer from numerous social problems often because of negative symptoms of the illness and impairments in social cognition. Social media and social networks now offer a novel tool to engage and help patients navigate and potentially improve social functioning. In this review, we aim to explore how impaired neural networks in schizophrenia impair social functioning, examine the evidence base for social networks and social media to help in the role, consider the evidence for current risks and benefits of use, and discuss the future of social media and social networks for schizophrenia. Patients with schizophrenia are increasingly connected to and engaged with social media. There is strong evidence that they own, use, and accept digital tools like smartphones and already use social media services like Facebook at high rates, especially among those who are younger. Less is known about the clinical risks and benefits of social media use in schizophrenia, although there are increasingly more social networking platforms being designed specifically for those with mental illness. Social media tools have the potential to offer a plethora of new services to patients with schizophrenia, although the clinical evidence base for such is still nascent. It is important to ensure that both clinicians and patients are aware of and educated about the risks of using social media. Going forward, it is likely that social media will have an expanding role in care, with social media offering new pathways to address negative symptoms and impairments in social cognition in schizophrenia.

Soil amendments for heavy metals removal from stormwater runoff discharging to environmentally sensitive areas

NASA Astrophysics Data System (ADS)

Trenouth, William R.; Gharabaghi, Bahram

2015-10-01

Concentrations of dissolved metals in stormwater runoff from urbanized watersheds are much higher than established guidelines for the protection of aquatic life. Five potential soil amendment materials derived from affordable, abundant sources have been tested as filter media using shaker tests and were found to remove dissolved metals in stormwater runoff. Blast furnace (BF) slag and basic oxygenated furnace (BOF) slag from a steel mill, a drinking water treatment residual (DWTR) from a surface water treatment plant, goethite-rich overburden (IRON) from a coal mine, and woodchips (WC) were tested. The IRON and BOF amendments were shown to remove 46-98% of dissolved metals (Cr, Co, Cu, Pb, Ni, Zn) in repacked soil columns. Freundlich adsorption isotherm constants for six metals across five materials were calculated. Breakthrough curves of dissolved metals and total metal accumulation within the filter media were measured in column tests using synthetic runoff. A reduction in system performance over time occurred due to progressive saturation of the treatment media. Despite this, the top 7 cm of each filter media removed up to 72% of the dissolved metals. A calibrated HYDRUS-1D model was used to simulate long-term metal accumulation in the filter media, and model results suggest that for these metals a BOF filter media thickness as low as 15 cm can be used to improve stormwater quality to meet standards for up to twenty years. The treatment media evaluated in this research can be used to improve urban stormwater runoff discharging to environmentally sensitive areas (ESAs).

So That's What They're For: Breastfeeding Basics by Janet Tamaro

PubMed Central

Hurst, Helen M.

2001-01-01

So That's What They're For: Breastfeeding Basics by Janet Tamaro. Published 1998 by Adams Media Corporation in Holbrook, MA. As childbirth educators continue the effort to find ways to educate women on the benefits of breastfeeding, it is increasingly difficult to find literature that appeals to teenagers and nonmedical personnel. Many texts are written at such a high level of language and complexity that they are inappropriate to recommend for the teenage girl or the educated woman who has no desire to become bogged down by the pathophysiology of the breast and the plethora of research that has been conducted. In her book So That's What They're For: Breastfeeding Basics (1998), Janet Tamaro achieves a balance between information, practical suggestions, anecdotes, and a good helping of humor to guide the pregnant or new mother through the decision and practice of breastfeeding.

College Students Perceptions of Web-Based Leaning in Basic Mathematics Subject

NASA Astrophysics Data System (ADS)

Husna, H.; Septia, T.; Cesaria, A.

2018-04-01

With the emergence of the Internet, e-learning has increasingly become the promising solution that continues to grow day after day. Considering students’ perception toward e-learning is important in successful development of e-learning in higher education, since attitude of user towards application of information technology is one of the most effective factors. This study aims to determine students' perceptions of using basic math textbook for physics with web-based. Students' perceptions are closely related to their achievement. The learning media in accordance with the desire of students will make them motivated. This research is qualitative data analysis was done descriptively. The data obtained in this study comes from researchers as the main instrument, the data questionnaire and interview data is unstructured. The results are students' perceptions of using basic math textbook for physics with web-based are in the positive category.

Evaluation of a newly developed media-supported 4-step approach for basic life support training

PubMed Central

2012-01-01

Objective The quality of external chest compressions (ECC) is of primary importance within basic life support (BLS). Recent guidelines delineate the so-called 4“-step approach” for teaching practical skills within resuscitation training guided by a certified instructor. The objective of this study was to evaluate whether a “media-supported 4-step approach” for BLS training leads to equal practical performance compared to the standard 4-step approach. Materials and methods After baseline testing, 220 laypersons were either trained using the widely accepted method for resuscitation training (4-step approach) or using a newly created “media-supported 4-step approach”, both of equal duration. In this approach, steps 1 and 2 were ensured via a standardised self-produced podcast, which included all of the information regarding the BLS algorithm and resuscitation skills. Participants were tested on manikins in the same mock cardiac arrest single-rescuer scenario prior to intervention, after one week and after six months with respect to ECC-performance, and participants were surveyed about the approach. Results Participants (age 23 ± 11, 69% female) reached comparable practical ECC performances in both groups, with no statistical difference. Even after six months, there was no difference detected in the quality of the initial assessment algorithm or delay concerning initiation of CPR. Overall, at least 99% of the intervention group (n = 99; mean 1.5 ± 0.8; 6-point Likert scale: 1 = completely agree, 6 = completely disagree) agreed that the video provided an adequate introduction to BLS skills. Conclusions The “media-supported 4-step approach” leads to comparable practical ECC-performance compared to standard teaching, even with respect to retention of skills. Therefore, this approach could be useful in special educational settings where, for example, instructors’ resources are sparse or large-group sessions have to be prepared. PMID:22647148

Media use and school achievement--boys at risk?

PubMed

Mössle, Thomas; Kleimann, Matthias; Rehbein, Florian; Pfeiffer, Christian

2010-09-01

In work done at the German Criminological Research Institute of Lower Saxony (KFN) various methods have been used to investigate how specific inappropriate media usage patterns affect academic performance in children and adolescents. The findings are paralleled by current international research indicating a negative relationship between these two variables. Based on a cross-sectional survey of 5,529 fourth grade students and a longitudinal panel study with 1,157 primary schoolchildren, a key finding can be demonstrated: the more time students spend on consuming media and the more violent its contents are, the worse are their marks at school, even when controlling for vital factors such as family, educational, or immigrant background. In particular, boys who gender-specifically are better equipped with electronic media devices, who partially have extensive media usage times and who strongly prefer violent media content, are at the risk of showing poor school performance. In fact, a decrease in academic performance of boys can be observed in German school statistics. By presenting first results of a school-based intervention programme, a promising approach to the reduction of detrimental effects of electronic media use on school performance is introduced.

Fate and transport with material response characterization of green sorption media for copper removal via adsorption process.

PubMed

Chang, Ni-Bin; Houmann, Cameron; Lin, Kuen-Song; Wanielista, Martin

2016-02-01

Green adsorption media with the inclusion of renewable and recycled materials can be applied as a stormwater best management practice for copper removal. A green adsorption media mixture composed of recycled tire chunk, expanded clay aggregate, and coconut coir was physicochemically evaluated for its potential use in an upflow media filter. A suite of tests were conducted on the media mixture and the individual media components including studies of particle size distribution, isotherms, column adsorption and reaction kinetics. Isotherm test results revealed that the coconut coir had the highest affinity for copper (q(max) = 71.1 mg g(-1)), and that adsorption was maximized at a pH of 7.0. The coconut coir also performed the best under dynamic conditions, having an equilibrium uptake of 1.63 mg g(-1). FE-SEM imaging found a strong correlation between the porosity of the micro pore structure and the adsorptive capacity. The use of the green adsorption media mixture in isolation or the coconut coir with an expanded clay filtration chamber could be an effective and reliable stormwater best management practice for copper removal. Copyright © 2015 Elsevier Ltd. All rights reserved.

Social media's and online user-generated content's role in services advertising

NASA Astrophysics Data System (ADS)

Stavrianea, A.; Kavoura, Androniki

2015-02-01

The aim of this paper is to present results from a study that examines the use of the Internet for collecting material and the attention people pay to advertisements through different media sources in the context of services. A representative stratified sample of 301 respondents of foreign arrivals of tourists in the Athens airport, Greece, collected in June and July 2014 was employed. We present which social media sources and user-generated material that promote advertisements were found to be important in capturing people's attention. Results illustrated the significant role that advertisements on Facebook play on the way people pay attention to. In fact, Facebook was found to be the second most important medium that people use when collecting material. In addition, Facebook was found to be the third source that respondents strongly agreed that they pay attention to advertisements, with the official websites/blogs to be the first source and travel guidebooks and travel magazines to follow, leaving traditional media far behind. Implications and suggestions are provided for online communication programs that may incorporate social media in services marketing communications campaigns. Libraries and corporate bodies may employ social media for advertising their services based on the significant role social media have.

Purification of uranothorite solid solutions from polyphase systems

NASA Astrophysics Data System (ADS)

Clavier, Nicolas; Szenknect, Stéphanie; Costin, Dan Tiberiu; Mesbah, Adel; Ravaux, Johann; Poinssot, Christophe; Dacheux, Nicolas

2013-10-01

The mineral coffinite, nominally USiO4, and associated Th1-xUxSiO4 uranothorite solid solutions are of great interest from a geochemical point of view and in the case of the direct storage of spent nuclear fuels. Nevertheless, they clearly exhibit a lack in the evaluation of their thermodynamic data, mainly because of the difficulties linked with their preparation as pure phases. This paper thus presents physical and chemical methods aiming to separate uranothorite solid solutions from oxide additional phases such as amorphous SiO2 and nanometric crystallized Th1-yUyO2. The repetition of centrifugation steps envisaged in first place was rapidly dropped due to poor recovery yields, to the benefit of successive washings in acid then basic media. Under both static and dynamic flow rates (i.e. low or high rate of leachate renewal), ICP-AES (Inductively Coupled Plasma - Atomic Emission Spectroscopy) analyses revealed the systematic elimination of Th1-yUyO2 in acid media and of SiO2 in basic media. Nevertheless, two successive steps were always needed to reach pure samples. On this basis, a first cycle performed in static conditions was chosen to eliminate the major part of the accessory phases while a second one, in dynamic conditions, allowed the elimination of the residual impurities. The complete purification of the samples was finally evidenced through the characterization of the samples by the means of PXRD (Powder X-Ray Diffraction), SEM (Scanning Electron Microscopy) observations and X-EDS (X-Ray Energy Dispersive Spectroscopy) analyses.

Detection of biologically important anions in aqueous media by dicationic azaborines bearing ammonio or phosphonio groups.

PubMed

Agou, Tomohiro; Sekine, Masaki; Kobayashi, Junji; Kawashima, Takayuki

2009-01-01

New cationic triarylboranes bearing ammonio or phosphonio groups on the periphery were synthesized from a common intermediate, a dibromodibenzoazaborine. These cationic molecules are soluble in highly polar organic solvents as well as water, and they exhibit strong light absorption and photoluminescence emission in water. Complexation of the cationic azaborines with fluoride and cyanide ions in aqueous media proceeded and could be monitored by NMR, UV/Vis, and fluorescence spectroscopy.

Propagation of Wide Bandwidth Signals through Strongly Turbulent Ionized Media

DTIC Science & Technology

1982-03-15

through random ionized media. This work is applicable to the problems of satel- lite communication and space based radar observation through a disturbed...REALIZATIONS 87 3.2 FORMULATION 88 3.2.1 Wide Bandwidth Signals 91 3.2.2 Total Phase Shift, Time Delay, and Doppler Frequency 95 3.2.3 Impulse Response...scattering limit. The 20 Gaussian form corresponds to pulse wander and dispersion while the expo- nential form corresponds to diffractive pulse spreading

Interplay between media and social influence in the collective behavior of opinion dynamics

NASA Astrophysics Data System (ADS)

Colaiori, Francesca; Castellano, Claudio

2015-10-01

Messages conveyed by media act as a major drive in shaping attitudes and inducing opinion shift. On the other hand, individuals are strongly affected by peer pressure while forming their own judgment. We solve a general model of opinion dynamics where individuals either hold one of two alternative opinions or are undecided and interact pairwise while exposed to an external influence. As media pressure increases, the system moves from pluralism to global consensus; four distinct classes of collective behavior emerge, crucially depending on the outcome of direct interactions among individuals holding opposite opinions. Observed nontrivial behaviors include hysteretic phenomena and resilience of minority opinions. Notably, consensus could be unachievable even when media and microscopic interactions are biased in favor of the same opinion: The unfavored opinion might even gain the support of the majority.

Interplay between media and social influence in the collective behavior of opinion dynamics.

PubMed

Colaiori, Francesca; Castellano, Claudio

2015-10-01

Messages conveyed by media act as a major drive in shaping attitudes and inducing opinion shift. On the other hand, individuals are strongly affected by peer pressure while forming their own judgment. We solve a general model of opinion dynamics where individuals either hold one of two alternative opinions or are undecided and interact pairwise while exposed to an external influence. As media pressure increases, the system moves from pluralism to global consensus; four distinct classes of collective behavior emerge, crucially depending on the outcome of direct interactions among individuals holding opposite opinions. Observed nontrivial behaviors include hysteretic phenomena and resilience of minority opinions. Notably, consensus could be unachievable even when media and microscopic interactions are biased in favor of the same opinion: The unfavored opinion might even gain the support of the majority.

Perceived realism moderates the relation between sexualized media consumption and permissive sexual attitudes in Dutch adolescents.

PubMed

Baams, Laura; Overbeek, Geertjan; Dubas, Judith Semon; Doornwaard, Suzan M; Rommes, Els; van Aken, Marcel A G

2015-04-01

This study examined whether the development of sexualized media consumption and permissive sexual attitudes would be more strongly interrelated when adolescents perceived sexualized media images as highly realistic. We used data from a three-wave longitudinal sample of 444 Dutch adolescents aged 13-16 years at baseline. Results from parallel process latent growth modeling multigroup analyses showed that higher initial levels of sexualized media consumption were associated with higher initial level of permissive sexual attitudes. Moreover, increases of sexualized media consumption over time were associated with increases of permissive sexual attitudes over time. Considering the moderation by perceived realism, we found these effects only for those who perceived sexualized media as more realistic. Findings for male and female adolescents were similar except for the relations between initial levels and subsequent development. Among male adolescents who perceived sexualized media images to be realistic, higher initial levels of permissive sexual attitudes were related to subsequent less rapid development of sexualized media consumption. For male adolescents who perceived sexualized media to be less realistic, higher initial levels of sexualized media consumption were related to a subsequent less rapid development of permissive sexual attitudes. These relations were not found for female adolescents. Overall, our results suggest that, in male and female adolescents, those with a high level of perceived realism showed a correlated development of sexualized media consumption and permissive sexual attitudes. These findings point to a need for extended information on how to guide adolescents in interpreting and handling sexualized media in everyday life.

Studies of elasticity, sound propagation and attenuation of acoustic modes in granular media: final report

DOE Office of Scientific and Technical Information (OSTI.GOV)

Makse, Hernan A.; Johnson, David L.

2014-09-03

This is the final report describing the results of DOE Grant # DE-FG02-03ER15458 with original termination date of April 31, 2013, which has been extended to April 31, 2014. The goal of this project is to develop a theoretical and experimental understanding of sound propagation, elasticity and dissipation in granular materials. The topic is relevant for the efficient production of hydrocarbon and for identifying and characterizing the underground formation for storage of either CO 2 or nuclear waste material. Furthermore, understanding the basic properties of acoustic propagation in granular media is of importance not only to the energy industry, butmore » also to the pharmaceutical, chemical and agricultural industries. We employ a set of experimental, theoretical and computational tools to develop a study of acoustics and dissipation in granular media. These include the concept effective mass of granular media, normal modes analysis, statistical mechanics frameworks and numerical simulations based on Discrete Element Methods. Effective mass measurements allow us to study the mechanisms of the elastic response and attenuation of acoustic modes in granular media. We perform experiments and simulations under varying conditions, including humidity and vacuum, and different interparticle force-laws to develop a fundamental understanding of the mechanisms of damping and acoustic propagation in granular media. A theoretical statistical approach studies the necessary phase space of configurations in pressure, volume fraction to classify granular materials.« less

Social Media, Peer Review, and Responsible Conduct of Research (RCR) in Chemistry: Trends, Pitfalls, and Promises

PubMed Central

Jogalekar, Ashutosh S.

2015-01-01

Over the last two decades, various themes inherent in the responsible conduct of research (RCR) in chemistry have been brought to light through prominent cases of research misconduct. This article will describe a few of these cases especially through the lens of social media such as blogs and Twitter. A case will be made that these wholly novel modalities of online discussion are now complementing, and in some cases even circumventing some of the limitations of traditional peer review in chemistry. We present in detail our evaluation of three recent cases of RCR along with several other social media illustrations. These cases have been selected to be representative and showcase several of the most prominent issues at the intersection of traditional and social-media based peer review. In each case, basic details are presented along with a brief discussion of the underlying issues—readers interested in deeper analysis of each subject are referred to a collection of relevant articles and websites. This perspective focuses on the most important RCR issues that have arisen in the past decade, a time which we believe coincides with the serious participation of the scientific community in general, and the chemistry community in particular, in social media-based, citizen-enabled peer-review. A discussion of important trends in RCR in the age of social media, outstanding developments in this area, and questions of enduring interest for the near future concludes the article. PMID:26155733

Social Media, Peer Review, and Responsible Conduct of Research (RCR) in Chemistry: Trends, Pitfalls, and Promises.

PubMed

Jogalekar, Ashutosh S

2015-01-01

Over the last two decades, various themes inherent in the responsible conduct of research (RCR) in chemistry have been brought to light through prominent cases of research misconduct. This article will describe a few of these cases especially through the lens of social media such as blogs and Twitter. A case will be made that these wholly novel modalities of online discussion are now complementing, and in some cases even circumventing some of the limitations of traditional peer review in chemistry. We present in detail our evaluation of three recent cases of RCR along with several other social media illustrations. These cases have been selected to be representative and showcase several of the most prominent issues at the intersection of traditional and social-media based peer review. In each case, basic details are presented along with a brief discussion of the underlying issues-readers interested in deeper analysis of each subject are referred to a collection of relevant articles and websites. This perspective focuses on the most important RCR issues that have arisen in the past decade, a time which we believe coincides with the serious participation of the scientific community in general, and the chemistry community in particular, in social media-based, citizen-enabled peer-review. A discussion of important trends in RCR in the age of social media, outstanding developments in this area, and questions of enduring interest for the near future concludes the article.

The Media and Technology Usage and Attitudes Scale: An empirical investigation

PubMed Central

Rosen, L.D.; Whaling, K.; Carrier, L.M.; Cheever, N.A.; Rokkum, J.

2015-01-01

Current approaches to measuring people’s everyday usage of technology-based media and other computer-related activities have proved to be problematic as they use varied outcome measures, fail to measure behavior in a broad range of technology-related domains and do not take into account recently developed types of technology including smartphones. In the present study, a wide variety of items, covering a range of up-to-date technology and media usage behaviors. Sixty-six items concerning technology and media usage, along with 18 additional items assessing attitudes toward technology, were administered to two independent samples of individuals, comprising 942 participants. Factor analyses were used to create 11 usage subscales representing smartphone usage, general social media usage, Internet searching, e-mailing, media sharing, text messaging, video gaming, online friendships, Facebook friendships, phone calling, and watching television in addition to four attitude-based subscales: positive attitudes, negative attitudes, technological anxiety/dependence, and attitudes toward task-switching. All subscales showed strong reliabilities and relationships between the subscales and pre-existing measures of daily media usage and Internet addiction were as predicted. Given the reliability and validity results, the new Media and Technology Usage and Attitudes Scale was suggested as a method of measuring media and technology involvement across a variety of types of research studies either as a single 60-item scale or any subset of the 15 subscales. PMID:25722534

One Health in social networks and social media

PubMed Central

Mekaru, S.R.; Brownstein, J.S.

2015-01-01

Summary In the rapidly evolving world of social media, social networks, mobile applications and citizen science, online communities can develop organically and separately from larger or more established organisations. The One Health online community is experiencing expansion from both the bottom up and the top down. In this paper, the authors review social media’s strengths and weaknesses, earlier work examining Internet resources for One Health, the current state of One Health in social media (e.g. Facebook, Twitter, YouTube) and online social networking sites (e.g. LinkedIn and ResearchGate), as well as social media in One Health-related citizen science projects. While One Health has a fairly strong presence on websites, its social media presence is more limited and has an uneven geographic distribution. In work following the Stone Mountain Meeting, the One Health Global Network Task Force Report recommended the creation of an online community of practice. Professional social networks as well as the strategic use of social media should be employed in this effort. Finally, One Health-related research projects using volunteers (citizen science) often use social media to enhance their recruitment. Including these researchers in a community of practitioners would take full advantage of their existing social media presence. In conclusion, the interactive nature of social media, combined with increasing global Internet access, provides the One Health community with opportunities to meaningfully expand their community and promote their message. PMID:25707189

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